Study Guide Review free essay sample

Think positively Use the power of visualization Know that most nervousness is not visible Dont Expect Perfection 7. Critical thinking- focused, organized thinking about such things as the logical relationships among ideas, the soundness of evidence, the differences between fact opinion 8. 7 elements in which we focus on how these elements interact when a public speaker addresses an audience Speaker- the person who Is presenting an oral message to a listener Message- whatever a speaker communicates to someone else Channel- the means by which a message Is communicatedListener- the person who receives the speakers message Feedback- the messages, usually nonverbal, sent from a listener to a speaker Interference- anything that Impedes the communication of a message. Interference can be external or internal listeners Situation- the time place in which speech communication occurs 9. Speech making becomes more complex as cultural diversity Increases. Part of the complexity stems from the differences In language from culture to culture. We will write a custom essay sample on Study Guide Review or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page The meaning attached to gestures, facial expressions, other nonverbal signals also vary from culture to culture.Ethnocentrism often blocks communication the belief that ones own group or culture is superior to all other groups or cultures Chapter 2 1 . Ethics is defined as the branch of philosophy that deals with issues of right and wrong in human affairs. As a public speaker, you will face ethical issues at every stage of the speechifying process- from the initial decision to speak through the final presentation of the message. 2. Make sure goals are ethically sound, be fully prepared for each speech, be honest in what you say, avoid name-calling abusive language(personal dignity free beech), put ethical principles into practice 3. Plagiarism- presenting another persons language or ideas as ones own Global plagiarism- stealing a speech entirely from a single source passing it off as ones own Patchwork plagiarism- stealing ideas or language from two or three sources passing them off as ones own Incremental plagiarism- failing to give credit for particular parts of a speech that are borrowed from other people 4. Be courteous , avoid prejudging the speaker, maintain the free open expression of ideas Chapter 3 1 .Hearing- the vibration of sound waves pm the eardrums the firing of electrochemical impulses in the brain Listening- paying close attention to, making sense of, what we hear 2. Art of listening can be helpful in almost every part of your life. Studies have been shown a strong correlation between listening academic success. Regardless of profession or walk of life, you never escape the need for a well-trained ear. Listening is also important to you as a speaker. It is probably the way you get most of your ideas information.Appreciative listening- listening for pleasure or enjoyment Empathic listening- to provide emotional support for a speaker Comprehensive listening- listening to understand the message of a speaker Critical listening- listening to evaluate a message for purposes of accepting or rejecting it 3. Not concentrating, listening too hard, Jumping to conclusions, focusing on delivery personal appearance Tips Take listening seriously Be an active listener Resist distractions Dont be diverted by appearance or delivery Suspend Judgment Focus your listening (main points, evidence, techniqueDevelop note-taking skills Chapter 5 Brainstorming- a method of generating ideas for speech topics by free association of words and ideas 3. Internet searches 4. General purpose- the broad goal of a speech 5. Specific purpose- a single infinitive phrase that states precisely what a speaker hopes to accomplish in his or her speech 6. Tips for makin g a specific purpose statement Write the purpose statement as a full infinitive phrase, not as a fragment Express your purpose as a statement, not as a question Avoid figurative language in your purpose statementLimit your purpose statement to one distinct idea Make sure your specific purpose in not too vague or general 7. Questions you should ask Does my purpose meet the assignment? Can I accomplish my purpose in the time allotted? Is the purpose relevant to my audience? Is the purpose too trivial for my audience? Is the purpose too technical for my audience? 8. Central idea- a one-sentence statement that sums up or encapsulates the major ideas of a speech 9.Residual message- what a speaker wants the audience to remember after it has forgotten everything else in a speech 10. The central idea (1) should be expressed in a full sentence, (2) should not be in the form of a question, (3) should avoid figurative language, and (4) should not be vague or overly general. Chapter 6 1 . Audience centeredness- keeping the audience foremost in mind at every step of speech preparation and presentation 2. *** 3. *** Egocentrics- the tendency of people to be concerned above all with their own values, beliefs, and well-being 4.

Anova Hypothesis Testing Paper Essay Example

Anova Hypothesis Testing Paper Essay Example Anova Hypothesis Testing Paper Essay Anova Hypothesis Testing Paper Essay ANOVA Hypothesis Testing Paper RES/342 July 5, 2011 University of Phoenix ANOVA Hypothesis Testing Paper According to Payscale. com an individual with a high school education entering the work force will earn less than an individual with the same level of education who has worked longer in that particular field (Harrison, 2010). Team A has selected data from the Wages and Wage Earners data set and will be using the analysis of variance, also known as ANOVA, to compare the mean of age groups 18 63 which were broken down into four age groups to compare the average salary of each age group and will determine the accuracy of Payscale’s claim. In this paper we discuss our research question and the hypothesis and show how we concluded the selected hypothesis. Research Question and Hypothesis Statement Is there a difference in earned wages for workers with a 12th grade education based on the age of the worker? At a five percent level of significance (? ), the team’s null hypothesis (H0) is that the mean scores are the same for the four groups 18-25, 26-33, 36-44, and 46-53. The alternate hypothesis (H1) is that at least one mean is different. These hypotheses are simply illustrated as: H0: ? roup 1 = ? group 2 = ? group 3 = ? group 4, H1: At least one mean is different. Five Steps Hypothesis Testing and Results of F Test Team A conducted the following steps to test their hypothesis. Step 1 – The null and alternate hypotheses: H0: ? group 1 = ? group 2 = ? group 3 = ? group 4 H1: At least one mean is different Step 2 – Select the level of significance: ? = . 05 Step 3 –Identify test statistic: Use the â€Å"F† distribution because this is an ANOVA test Step 4 – Formulate the decision rule Reject the null hypothesis if F-calculated is greater than 2. 85 (F-critical) Step # 5 – Calculate the test statistic, arrive at a decision, and state a conclusion: Degrees of freedom in the numerator: df= c-1= 4-1= 3 Degrees of freedom in the denominator: df = n-c = 43-4 = 39 Decision is to retain the null hypothesis. Conclusion is that a difference cannot be proven between wages of workers with a 12th grade education based upon age. p-value = 0. 086 Excel Output: Anova: Single Factor | | | | | | |SUMMARY | | | | | | | |Groups |Count |Sum |Average |Variance | | | |Group 1 |9 |165739 |18415. 44 |75696297 | | | |Group 2 |15 |349791 |23319. |75244077 | | | |Group 3 |9 |249868 |27763. 11 |1. 03E+08 | | | |Group 4 |10 |306802 |30680. 2 |2. 28E+08 | | | |ANOVA | | | | | | | |Source of Variation |SS |df |MS |F |P-value |F critical | |Between Groups |8. 4E+08 |3 |2. 75E+08 |2. 358418 |0. 086439 |2. 845068 | |Within Groups |4. 54E+09 |39 |1. 16E+08 | | | | |Total |5. 36E+09 |42 |   |   |   |   | | | | | | | | | Raw Data and Charts Wages and Wage Earners 2005 Data Set Yearly |Group 1 |Group 2 |Group 3 |Group 4 | |Wages | | | | | | |$11,186. 00 |$11,451. 00 |$18,121. 00 |$9,879. 00 | | |$20,852. 00 |$29,191. 00 |$26,614. 00 |$49,898. 0 | | |$14,476. 00 |$41,780. 00 |$33,411. 00 |$20,852. 00 | | |$16,667. 00 |$13,312. 00 |$22,485. 00 |$32,235. 00 | | |$15,234. 00 |$15,957. 00 |$21,994. 00 |$50,171. 00 | | |$39,888. 00 |$25,166. 00 |$28,440. 0 |$31,702. 00 | | |$13,162. 00 |$30,308. 00 |$50,187. 00 |$36,178. 00 | | |$20,793. 00 |$21,716. 00 |$31,799. 00 |$12,285. 00 | | |$13,481. 00 |$28,219. 00 |$16,817. 00 |$45,976. 00 | | | |$31,691. 0 | |$17,626. 00 | | | |$17,690. 00 | | | | | |$16,796. 00 | | | | | |$32,094. 00 | | | | | |$15,193. 0 | | | | | |$19,227. 00 | | | References Harrison, H. (2010). The Average Salary of High School Graduates. Retrieved July 2, 2011, from ehow. com/facts_5232664_average-salary-high-school-graduates. html [pic] Reject H0 Do not reject H0  ± =. 05 F = 2. 85 H0 ? =. 05 F = 2. 85

Floating point IEEE754 Coursework Example | Topics and Well Written Essays - 750 words

Floating point IEEE754 - Coursework Example This means that it can â€Å"float†. The point in which the radical point is located is indicated in the internal representation. There are various types of floating representation but the most common one is that of IEEE754. In a real computer, the representation of floating point numbers is through the Institute of Electrical and Electronic Engineers 754 (IEEE – 754) floating point number format. The features of this number format are that it uses 32 bits (single precision), the number y is represented as ?x(1.a1a2†¦..a23).2e, where y represents the number, whether positive or negative, ai is the mantissa entries and can only go up to 23, that is, i=1†¦.23. e is the exponent. There is a need to note the 1 that is given before the decimal (radix) point. This point represents the sign of the number that is being represented. 0 is a representation of a positive number while 1 is a representation of the negative number. The next eight bits forms the exponents. In this representation, there is no separate bit in the representation. The sign of the actual exponent is normally taken care of by adding 127 to actual exponent. An example is if the real number value is 6, then there will be an addition of 127, making it 133, that is 127 + 6. The reason as to why 127 is added is because in eight bit number representation, the maximum number that can be represented is (11111111)2 which is 255. Half of 255 is 127. This means that negative exponents of 127 can be represented and at the same time positive exponents of 127 can be represented. With this representation, the exponent will be represented as -127=128. The computer can also represent the numbers using another method other than the one stated in the paragraph above. In this regard, the computer can use eight bits for the exponent, reserving 1 bit for the sign of the exponent. In this case, the largest bit used for representation would be 127. By biasing the representation of the exponent the i nstances of getting a negative zero is avoided and also a positive zero. The effects of both are the same. The actual range of exponent in IEEE format is not 0 to 255 but 0 to 254. In this case then, the exponent has a range of -126127. In this case, -127 and 128 are used for other purposes. If e=128 and al the values of the mantissa are zeros, then the number is +- ?. The infinity bit is governed by the number before it. If e=128 and all the entries of the mantissa are not zeros, it will mean that the real number that is being represented is not a number (NaN). Because of the number that is at the lead in the floating number representation, the zero value cannot be precisely presented. This is the reason as to why the number zero is represented using -127 and all the entries of the mantissa are zero. The next bits, 23 in number, are used to represent the mantissa (Brewe 73) Representing double-precision numbers (64-bit) In double precision format, real numbers are represented in 64 bits. In this format, the computer uses the 1st bit as a sign bit. The next 11 bits are used to represent the exponent. The rest of the bits, which are 52 are used to represent the mantissa (Brewe 74). The process of converting a decimal number to IEEE754 format will undergo some steps. The first step is to check the sign of the number. If it is negative, then the sign will

Literature- Discussing Questions 1 Essay Example | Topics and Well Written Essays - 1000 words

Literature- Discussing Questions 1 - Essay Example She appears plain and hard-working in this first scene. Henry and Elisa seem to be a â€Å"settled† couple. He cares how she feels and she cares for him also, but there seems to be no passion there. Instead they are good friends, but not intimate in the sharing sense of the word. She does not want him to know about the mums. He seems to value her skills and strength, rather than her femininity, and he says she looks â€Å"nice†, not beautiful. The salesman takes and interest in order to establish rapport, and to get some work from her, plus a flowerpot he can sell. She is taken in, believes his story and thinks he has a genuine interest in her flowers. It is her specialty and she loves feeling like she is sharing it. (Ten inch mums are huge.) The first paragraph describe Elisa’s feeling about her life: closed in, grey and damp, waiting for something to change. She is isolated and her life is quite limited and simple, as opportunities for women of that time were very limited.The valley is ready to sleep through the coming wionter in anticipation of spring, but Elisa has passed her chance at spring and new blooms. She lives that part of her life through her flowers. 5 How might Elisas preparations for going out for dinner be likened to her care for the chrysanthemums? Explain Elisas response after seeing her seedling chrysanthemums have been tossed out onto the road. Elisa’s preparations for going out to dinner are meticulous and thorough. She does not only care for her own body, but for her husband’s clothing too. When she is done bathing she surveys the results and then dresses. She is as careful with her flowers, as we see in the first scene and she tells us with her directions to the salesman for taking care of them. She packed the seedlings with great care for him to take to the fictional client. She realizes that he has manipulated her and just wanted the money and the flower pot, which she notes that he

Extracting DNA from Fruit in Various Stages of Ripeness

Extracting DNA from Fruit in Various Stages of Ripeness INTRODUCTION This life science based experiment will test strawberries in their various stages of ripeness, in order to see which stage will yield the most extractable DNA. An extraction kit will be designed from common household items, such as salt and detergent, in order to purify the DNA so that it is visible to the naked eye and can be weighed. Three degrees of strawberry will be tested: strawberries that have not fully ripened yet, identified by their firm bodies that are still a mixture of green and red; strawberries that have ripened fully, identified by their firm-but-not-hard bodies and bright red color; and strawberries that are overly ripe, which can be identified by their mushy and easily bruised bodies, as well as their dark red color. PROBLEM STATEMENT Which degree of strawberry ripeness will yield the most extractable DNA: under ripe, ripe, or over ripe? SUMMARY OF PROJECT PLAN First, the 1/2 teaspoon of salt, 1/3 cup of water, and 1 tablespoon of detergent needed for the DNA extraction liquid will be mixed and set aside. Three strawberries of the first stage of ripeness will be placed into a plastic bag and mashed into a pulp. Three tablespoons of the extraction liquid will be added to the bag and blended via the same mashing process. The strawberry mixture will then be poured into a nylon-covered funnel set over a small glass, until the liquid and pulp have been separated. One teaspoon of the strawberry mixtures liquid will then be poured into a test tube. 5 ml of chilled rubbing alcohol will be poured into the test tube after, so that it forms a layer atop the strawberry liquid. A droplet of blue dye will be added to the mix, so that it settles on the DNA between the layers and dyes it blue, making it easier to identify the DNA. The blue DNA will then be measured using milliliter markings on the test tube, and recorded. RELEVENCE Deoxyribonucleic Acid better known as DNA is a set of instructions that can be found in the cells of every living thing. The study of all DNA is very important. Without it, key medical discoveries that save countless lives every day would not be made. Using DNA, we are able to discover diseases a baby could inherit from its parents before birth, to detect whether a suspect is guilty or innocent, and to find chromosomal defects in patients with Downs Syndrome. The study of strawberry DNA specifically is also important, and can be applied to several real world scenarios. For instance, scientists are able to isolate particular proteins and chemicals that have been rumored to slow the spread of cancer. They are also able to clone proteins known for turning strawberries red and creating the strawberries flavor. The study of extractable strawberry DNA at various stages in maturation can also be applied to real world scenarios. Scientists are able to compare the growing process and maturation of strawberries to that of other fruits. It can also be used to advise consumers of when strawberries are at their peak, so that they are able to get the optimal amount of nutrients out of the fruit. A1. Literature Review Two studies were found that related specifically to this one. The first is an experiment conducted in 2009 by William S. Boyd. The second is another experiment conducted in 2005 by Kaeleigh Thorp. William S. Boyd Extracting DNA from Fruit in Stages of Ripeness SUMMARY The objective behind Boyds experiment was to find out whether ripe fruit would yield more extractable DNA than unripe or overripe. His experiment involved bananas, kiwis, and strawberries. The result was that, in the case of the kiwis and strawberries, ripe fruit did in fact yield more extractable DNA. However, he found that unripe bananas yield more extractable DNA than ripe and overripe. He concluded that, as fruit ripens, the nutrients break down and it begins to decompose, which destroys cells containing extractable DNA. CONNECTION As is the case with this experiment, Boyd wanted to know which stage of ripeness would yield the most DNA. COMPARING AND CONTRASTING Procedures Many of the procedures in Boyds experiment were similar yet different. Instead of putting the fruit in a bag and mashing it with his fingers, the fruit was blended in a food processor. The extraction liquid was chilled instead of the alcohol. The strawberry mixture was drained through nylon, but it was filtered and before being poured into the test tube instead of being filtered directly into the test tube. A graduated eyedropper was used to distribute the alcohol instead of pouring the alcohol down the side of the tube (Boyd, 2009). Materials Many of the materials in Boyds experiment were also similar. He used salt, water, and detergent to make his extraction liquid, which are the same materials as the extraction liquid in this study. He used alcohol to bring the DNA fibers together, blue dye to enhance the visibility and measurability of the extracted DNA, and a graduated test tube for measurements. However, there were some notable differences. He added pineapple juice to his extraction liquid, and his experiment used bananas and kiwis as well as strawberries, instead of strawberries alone (Boyd, 2009). Kaeleigh A. Thorp Extracting DNA from strawberries SUMMARY The objective behind Thorps experiment was to determine whether unripe, ripe, or overripe fruit would yield more extractable DNA. Her experiment used primarily strawberries. She hypothesized that ripe strawberries would yield the most extractable DNA, as under-ripe strawberries were not yet fully developed and overripe strawberries were too far into the decomposition process. Her findings supported her hypothesis, as the ripe strawberries did yield more extractable DNA (Thorp, 2007). CONNECTION Thorps experiment had the same objective as this study to find out what stage of ripeness would produce the most extractable DNA in Strawberries (Thorp, 2007). COMPARING AND CONTRASTING Procedures The procedures of Thorps experiment differed very little from this study. She chilled her extraction liquid by sitting it in a bowl of water and ice cubes, where this study did not require the extraction liquid be chilled. She used a blender to mash the fruit, instead of mashing it in a bag using fingers, and added water to it also something this study did not require. Lastly, again instead of using a plastic bag and fingers, she used a glass extraction rod to mix the extraction liquid with the blended strawberries (Thorp, 2007). Materials Thorp used nylon to filer the strawberry mixture, added blue dye to increase visibility and measurability, and used a graduated test tube for measurements, which are all in congruence with this study. However, instead of using salt, water, and detergent to make her own extraction liquid, Thorp used a premade Powdered Buffer made up of sodium chloride, sodium bicarbonate, and papain enzyme. She also used a premade Cell Blaster, containing sodium dodecyl sulfate (Thorp, 2007). A2a. Experimental Design Steps Preparation: Put the rubbing alcohol in a freezer or refrigerator, so that it will be cold enough to use later. Step 1: Extraction Liquid Combine a 1/2 teaspoon of salt, 1/3 cup of water, and 1 tablespoon of detergent in a jar to use as an extraction liquid. Mix it well and set it aside. Step 2: Prepare DNA for Extraction Take 3 strawberries and place it in a plastic bag. Push out all excess air and seal tightly. Mash the strawberry into a pulp by squeezing the bag with fingers. Do this for 2 minutes. Pour 3 tablespoons of the extraction liquid into the plastic bag. Push out all excess air and seal tightly. Mix the strawberry and extraction liquid by squeezing the bag with fingers. Do this for 1 minute. Step 3: Separate Liquid from Solid Stretch the nylon over the funnel. Place the tube of the funnel into a glass. Pour the strawberry pulp and extraction liquid over the nylon-lined funnel. Let the liquid drip into the glass for 30 seconds, or until the nylon stops dripping. Throw away the nylon and pulp. Step 4: Extract the DNA Pour the liquid into the test tube, filling it 1/4th of the way. Retrieve the rubbing alcohol from the freezer. Carefully tilting the test tube, pour the rubbing alcohol so that it runs slowly down the side instead of directly into the strawberry liquid and forms a layer on top of the strawberry liquid. Make sure the alcohol and the strawberry liquid do not mix, as the DNA collects between the layers. Add one drop of blue dye to the mixture. Take a moment to marvel at the blue gel-like substance (DNA made visible) that forms between the layers. Step 5: Measure Extracted DNA Using the graduated milliliter lines on the test tube, measure and record the amount of blue gel-like substance. Step 6: Repeat Process Thoroughly clean the cups, jar, test tube and funnel using water and paper towels. Repeat all of the steps with other strawberries, making sure to record the amount of DNA so a comparison can be made. A2b. Reasoning This method of experimental design was chosen because it called for fewer and more readily accessible supplies, and also because it had fewer and uncomplicated steps. The reasoning behind the method of testing this question was that overly complicated steps allow a higher margin for error. A simpler method provides fewer chances for mistakes to be made. There were several other studies consulted that had methods of testing similar to what is used in this experiment, but there were no other studies that had methods of testing that were the same. The method of testing in this experiment was developed using bits and pieces of other studies. The way this question is being tested is a better way than others because it was developed from bits and pieces of other more complicated studies, making it simpler. A2c. Sequence of Events The first step in collecting the data is adding one drop of blue dye to the layers of strawberry mixture and alcohol. The dye will collect between the layers and highlight the extracted DNA sitting in the middle, forming a blue gel-like substance. This gel-like substance will be measured and recorded using the millimeter markings on the graduated test tube. A2d. Tools Measuring cups Measuring spoons Small jar Graduated test tube Funnel Nylon Drinking Glass 9 Unripe strawberries 9 Ripe strawberries 9 Overripe strawberries 1/2 teaspoon of salt 1/3 cup of water 1 tablespoon of detergent 9 Resealing plastic bags 1 drop of blue dye A3. Variables A dependant variable is what the scientist measures, and is the part of the experiment that relies on changes made by the independent variable. An independent variable is what the scientist varies, and is the part of the experiment that decides the outcome of the dependant variable. A controlled variable is what the scientist keeps the same, and the part of the experiment that must not change in order to ensure that the results are measurable. DEPENDENT VARIABLE: Extracted DNA INDEPENDENT VARIABLE: Strawberries in three stages of development: under-ripe, ripe, and overripe CONTROLLED VARIABLE: The amount of strawberries, the amount of extraction liquid, the amount of alcohol, the amount of blue dye, the test tube and all other equipment. A4. Threat Reduction to Internal Validity Threats to the internal validity of this study have been reduced by the simple testable question, the properly identified variables, the control for outside influences, and the solid experimental procedure. MATURATION The experiment will be started and completed in a single day, and will take a maximum of two hours. That will allow sufficient time for each trial to be conducted carefully and for the utensils to be cleansed while assuring that there will be no time for the subjects to change before measurements. REPEATED MEASUREMENTS The experiment will be repeated three times for each type of strawberry, with a new set of materials each time, equating in exactly nine trial runs. Each sample will be disposed of after results are recorded, before the next trial was done none of the samples will be reused, nor will they come into contact with each other. INCONSISTENCE IN INSTRUMENTATIONÂ   In every trial run, the measurements will be taken using the same graduated test tube, glass, jar, and measuring spoons. Every measurement made will be taken in a way identical to the one before it, so that the outcome of the experiment is not compromised. EXPERIMENTAL MORTALITY The experiment is designed so that it cannot be completed without all of the subjects, meaning none of the subjects can drop out or be eliminated without completely derailing the study. This way, the trials will remain the same, and the results will not be compromised. EXPERIMENTER BIAS The experiment did not involve and could not come to any result that the experimenter would benefit directly from. The experimenter remained objective throughout the study. CONTROLLED VARIABLES There are several controlled variables that limit the factors that could skew the results. The tools for measurement remain the same throughout the trials so that there is no chance of new tools not providing the same results. The amount of strawberries stays the same three per trial so that the amount of extractable DNA is not distorted by one trial having more strawberries than the others. The amount of blue dye remains the same throughout the trials so that a larger amount of dye wont make the results seem bigger than they are. A5. Hypothesis: I predict that the ripe strawberries will produce more extractable DNA than both the under-ripe strawberries and the overripe strawberries. This prediction is based on observation. The under-ripe strawberry is still underdeveloped and very firm, meaning that it will likely produce less juice when mashed up less juice, less DNA. On the flipside, the overripe strawberry is overdeveloped and in a state of degradation, meaning that the DNA will likely be broken down and harder to extract. The ripe strawberry will produce more juice than the overripe, and will not be as susceptible to bruising and damage as the under-ripe, meaning it will likely produce more extractible DNA. B. Process of Data Collection The data was collected by first adding one drop of blue dye to the layers of strawberry mixture and alcohol in the graduated test tube. The dye gathered between the layers and around the extracted DNA that sat in the middle, so that it appeared to be a blue gel-like substance. This made the extracted DNA easier to see, which in turn made it easier to measure. The DNA was then measured and recorded using the millimeter markings on the graduated test tube. PROCESS OF RECORDING DATA: TOOLS USED FOR COLLECTION: 1 drop of blue dye Graduated test tube UNIT OF MEASUREMENT USED: Millimeter METHOD OF RECORDING: Unripe Ripe Over-Ripe Trial #1 3/4 ml 3 1/4 ml 1/2 ml Trial #2 1/2 ml 2 3/4 ml 1/4 ml Trial #3 1 ml 3 1/2 ml 1/2 ml B1. Appropriate Methods The methods described above were the best to conduct the experiment on this testable question because they relied less on scales. In many other studies, the ulterior way of measuring was to take a wooden rod, spool the DNA, and weigh it on a milligram scale. The wooden rod would be previously weighed and subtracted from the weight of the DNA spooled rod (science buddies). With the method used here, the rod is cut out of the picture only the DNA itself is measured. By doing this, we ensure that differently-weighted rods cannot skew the weight of the DNA. The drop of blue dye made it easier to see the extracted DNA. It was important that the DNA be clear so that the measurements were at their utmost accuracy. The graduated test tube made it so the DNA did not have to be spooled or moved before measuring, which kept the specimens together and limited the chances of losing or damaging the specimens. Millimeters were the practical unit of measurement, as the amount of extracted DNA is very small. C. Results The unripe strawberries were very firm and still mostly green. They were harder to mash up. The first trial including the unripe strawberries yielded 3/4 ml of extractable DNA. The second trial yielded less with 1/2 ml of extractable DNA. The third trial was the most successful, yielding 1 ml of extractable DNA. The ripe strawberries were softer and bright red all over. They were easier to mash. The first trial including the ripe strawberries yielded 3 1/4 ml of extractable DNA. The second trial yielded less with 2 3/4 ml of extractable DNA. The third trial once again was the most fruitful, yielding 3 1/2 ml. The over-ripe strawberries were very soft, a darker red, and covered in bruises. They were the easiest to mash up. The first trial including the over-ripe strawberries yielded 1/2 ml of extractable DNA. The second trial yielded a mere 1/4 ml of extractable DNA. The third trial produced the same results as the first, with 1/2 ml of extractable DNA. As the graph above shows, the ripe strawberries yielded a much larger amount than unripe and over-ripe strawberries. A single parallel is drawn between the unripe and over-ripe strawberries as they both yielded 1/2 ml of extractable DNA in separate trials unripe reaching 1/2 ml in Trial 2, over-ripe reaching 1/2 ml in trial 1. D. Conclusion The graph above displays how great the leap in extracted DNA was between the strawberry types. Although the unripe yielded higher results than the over-ripe strawberries in two of the trials (Trials #1 and #3), they both produced a minimal amount of extractable DNA when compared to the ripe strawberries. The unripe strawberries did not do as well because they are not yet mature. They provided less juice when mashed up for the extraction process, which provided fewer strands of DNA. The over-ripe strawberries did the worst because they are on the downgrade of maturation. While they provided plentiful juice for extraction, the DNA strands were destroyed in the process of decay. The ripe strawberries yielded the highest amounts of extractable DNA because they are at the hit the highest point of maturation. They provided the right amount of juice for the extraction process, and because they were at their peak, the DNA strands were intact. D1. Confirmation of Hypothesis I predicted that the ripe strawberries would produce more extractable DNA than both the under-ripe strawberries and the over-ripe strawberries. Based on my findings, with the ripe strawberries producing high amounts of extractable DNA where the unripe and over-ripe strawberries produced low amounts, it is evident that the ripe strawberries did yield the most extractable DNA. Therefore, I accept my initial hypothesis. D2. Experimental Design as Key Factor Experimental design is a key factor in science inquiry because it is the part in which groups are given their set treatments. In other words, experimental design is what decides if Group A will get Treatment B and Group C will get Treatment D, or if Group A will get Treatment D and Group C will get Treatment B. Without experimental design, the groups wont be assigned their proper treatments, and a statistical analysis cannot be made. If an experimental design is poorly constructed, it might miss some key components that affect the outcome altogether. For instance, if an experimental design lacks a control, nothing remains constant and some variables may not be counted for. Results of the experiment can be inconclusive, and when that happens, the study is rendered invalid. D3. Replication Replication is the process of repeating the steps of a procedure, so that an experiment can be duplicated again and again with the same results. Replication is important because there is always the possibility that results in a study have been skewed, or an experiment has been conducted wrong. Repeating the process and including several trials provides a way to prove that results are correct and to procure an average when averages are called for. This study is replicable because the instructions are clear and precise so that replication of the experiment as a whole is made easy, and the supplies needed are easy to find and easy to use. D3a. Evaluation of Validity Validity is important in science experiments because it proves the experiment was done correctly and the results were recorded accurately. Having a strong sense of validity means that the variables were measured reliably and strong causal links between the variables were found. REPLICATION This study is replicable in that there were three trials to each study. To confirm which one yielded more DNA than the rest, each type of strawberry was tested in three separate trials that way there were nine collective results each to consider instead of three. This study uses that replication to prove its analysis of the data. RELIABILITY This study is reliable thanks to that use of replication. Each type of strawberry was tested in three separate trials three for unripe, three for ripe, three for over-ripe to make sure the results were constant instead of a onetime occurrence. The results remained the in the same vicinity throughout the trials, proving that they are reliable. EXPERIMENTAL DESIGN The experimental design remains valid thanks to its simplicity. There was very little margin for error, and so repeating each trial using the same methods and measurements was quite simple. FUTURE QUESTIONS AND STUDIES Future studies might be expanded to use more than just strawberries. For example, one such study could compare ripe bananas to ripe strawberries, or ripe strawberries to ripe kiwis. Other studies might not involve strawberries at all, but replicate this study with a different fruit. For instance, would the results be the same with other fruits? Would ripe bananas yield more extracted DNA than unripe or overripe bananas?

Spartan Women: Sarah B Pomery

A Critical Book Review: Spartan Women by: Sarah B. Pomeroy It goes without saying that during the time of Ancient Greeks, the lives of human beings and the things considered important vary greatly compared to those living today. More heavily centered on male-dominance and government, the land of Sparta was very different from its surrounding Greek counterparts. It was known for not only its great warriors, but also for its unusual treatment of women. By unusual, I don’t mean treatment of inequality or lack of superiority compared to men, because women were just as valued as men, if not more; for they bared the gift of life. Spartan Women† takes an inside look of the personal lives of Spartans, and in particular, Spartan women living during this era. From the very first moment a Spartan woman is born, her treatment was incomparable to that of other Greek women. She is valued, because she brings the gift of life. Throughout the book, Pomeroy examines the differences betwee n the lives of females paralleled to males. If we were to compare a female infant to a male infant born into Sparta, it was much more stressful to be a male. At birth, Spartans practiced infanticide on male infants, and deformed or weak babies would be thrown into a chasm on Mount Taygetos.This is a form of eugenics, according to Pomeroy, and it ensured a strong military for the state, by only allowing physically strong infants the gift of being reared. Although every male was entitled to owning land and receiving an education, they must first pass the physical test put on by the state that classified a physically fit male. Not all male babies were capable of being warriors, but as long as it didn’t have obvious deformities, it passed the test. Female babies were not scrutinized in the same fashion as males were, since their main objective wasn’t to be warriors.They were still valued, because even â€Å"weak† females could still grow into mothers of warriors. Pr ogressing further into childhood, males are taught from the very start how to become strong warriors, and females are taught how to become mothers of strong warriors. Because their state revolved around the physical superiority of their military, children are taught a variety of athletic skills. The training girls participated in was similar to boys, but less extreme. During puberty, girls participated in trials of strength that included racing, hurling the javelin, wrestling, and discus throwing.Girls were trained just as much as boys because it was believed that by having two parents that were physically healthy, the odds of producing even healthier offspring were greater. Along with training in sports, girls were also thoroughly educated. In other Greek states, women did not have nearly as much free time as Spartan women did. Since the men of Sparta began warrior training at age 7, girls started their education around the same time. They were cultured in the arts, in areas such a s dancing, singing, and playing instruments.Spartan women also were granted the privilege of becoming literate. They were said to write letters to their sons away at war. Although most Spartan women were married by the age of 18, some today would consider this rather young, other Greek women were married even younger. The sole duty in the society of Sparta for women was to grow up physically healthy, become educated, get married, and rear healthy children, in particular, healthy warriors. Newly married Spartan couples would not live together until they passed the age of 30, because it was believed that absence made the heart grow stronger.Stronger passions between each other resulted in a physically stronger child. Being a mother was the highest honor for women, and being a mother of a brave warrior was even better. Pomeroy states many activities and roles women played in Spartan society, but the main running theme is that they lived in the shadow of men. From birth, they were evalu ated and examined to determine if they’d be fit for motherhood. Growing up, they’re physically trained to rear strong children. They then are married at a young age, and produce children for the rest of their days.Granted, Spartan women had much more of a say on who they married and whether or not to bear children compared to other Greek women, but a women did not stand very high in society if she was not married to a man, or a mother. The author’s thesis is not clearly stated at first, but after reading a few chapters, it is easy to connect the running theme of motherhood. She consistently talks about girls striving to attract mates, and obtaining marital status in order to bear children. For example, when girls and boys practiced their sports together, the girls were said to have been promiscuous and flirty in hopes of grabbing the boys’ attention.Girls would participate in nude Olympics, so that potential partners could come and observe. After marriage , a girl is bedded with her husband the very first night; some would call a little eager to become pregnant. And throughout adulthood, a woman plays the sole role of a mother who rears strong children to play out the same pattern. Overall, I thoroughly enjoyed reading this book. I have always taken an interest to Ancient Greek civilizations, and in particular, Sparta. The beginning of the book flowed pretty smoothly, until the author started to reference works that only ancient historians would be able to relate to.I am not fully familiar with the Spartan timeline or history, so when she referenced to certain wars, philosophers or works of poetry, I would just skim over those parts and keep reading. Before reading the book, I hoped to learn the social roles women played in Spartan society, as well as what went on in their personal lives. I feel that this was accomplished after reading, and I gained valuable insight on what it was like to be a woman during that time period. I found m yself talking to other people about the topics I was reading, because it blew me away how male-dominated their society was.Today, getting married and having children is only one of a million options a woman can choose to pursue. There are more things that I wish I could learn further, such as the thoughts and feelings of Spartan women. Although they portrayed a strong exterior similar to their male warrior counterparts, I wonder if deep down they were really unhappy with their status in society. This is not something that could possibly be easily figured out though, so I do not blame Pomeroy for excluding this kind of information. I have already recommended this book to others, and will continue to do so for those that are interested in Ancient Greek history.

I Know Why the Caged Birds Sing Essay

1. In the memoir the passage reveals Ritie’s self image. She characterizes herself as unappealing she does not see beauty within who she is. Ritie’s childhood led to her insecurities. When she was younger her parents took her to move with her grandparents. She believed her parents dishonored her. Ritie did not find her skin beautiful. She believed white was beauty. She was an uncomfortable in her own skin. She tried to become someone she is not because she knew how everyone view and felt about her. Since her childhood she received her appearance. Ritie kept her identity intact by not letting peoples judging and views influence her. 2. After years of separation Ritie’s relationship with her mother is respected. She respects her mother for who she is. Ritie sees her mother as a strong women, she knows her mother will also love her for who she is. Ritie admires her mother she looks up to her. Her love for her grandmother is more of mother daughter bond. Ritie’s role model is her grandmother and she is proud to say it. She sees her momma as a strong powerful person. She is tough but loving. Ritie’s wants to become like her grandmother, she loves her. 3. Maya knew she was different. She knew she did not fit in with the other girls in school. She did not feel that she was equal with everyone else she felt as she did not belong with the other children. She did not associate with anyone. She would isolate herself in a store. She barely socialized with any children. She stayed away from children her age even others. A comparison to race was when she was younger her tooth ached. The dentist was not willing to work with her. He was very racial and only worked with white patients. Ritie’s family copes with racism by not letting it affect them. They ignored, they maintained their dignity. 4. At the end of the memoir Ritie learns what might seem right to you will not always be viewed the same with others. For one to hare greatness they must go through obstacles. She learns everyone has the own definition on what is wrong and right. Ritie applies this when she had her baby she grew up and it gave her confidence in her baby. She always did what was best for her baby. 5. Why the Cage Bird sings shows that there is always a light at the end of a tunnel. When there’s darkness and disadvantages there is always hope to find your path. It shows they had to deal with negativity and racism but they took that and turned it into positive. The title relates they went through many struggles but in the end they can be free. 6. Adversity in the story delt with abandonment, racism, childhood trapped, unacceptance, also religion. In Mayas case she and her brother were sent to live with their momma in Stamps, Arkansas. She always had it in her mind that her parents were not alive. When she found out they were she had the feeling of abandonment she felt that they did not want her. When Mayas dad comes to get them she does not want to leave. She got use to Stamps. She overcomes her adversity by realizing her parents were going through a difficult situation. 7. Lessons can be learned about the South. Situations are never easy but you have to make the best of it. In life we are always going to struggle but we must stay strong and not let it get the best of us. There are always going to be people who judge you or don’t accept you. But if you know who you are and where you come from that’s all that matters. Another lesson is when should not try to be. Someone we are not we must appear ourselves because no one is perfect. We all have insecurities about ourselves but we should love who we are. Natasha De La Cruz Grade: 10 Title: â€Å"Bless Me, Ultima† Author: Rudolph Anaya 1. During the World War 2 actions occurred in this novel. In the novel a women lost her sons due to the war. Gabriel had both of her sons fighting in the war which was also significant hat occurred was a veteran shoot Chavez because he was affected by the war. 2. The characters adapt to the landscape because of the family’s different life livings. Antonio had to live two different life styles. His mother’s families were simple farming people. It was easier for them to farm everything was more nourishing. His father’s family was rougher around the edges. They were more independent and the land was harder to work with. Both families had their own values. 3. A movie that relates to this novel is Ruby Bridges. Both Ruby and Antonio go through struggles in their life to make something out of them. The film is about a young six year old African American girl who had enough potential to get into a better school for a better education which was in an all Caucasian school. Around that time racism was still around. Ruby was the only African American girl in her class, which then led problems to the parents of the children in her class. No one accepted her in the new school except her teacher. Throughout the beginning she had faced crowds of white citizens against her physically and emotionally. One day she was encouraged by her teacher and her mother who gave her strength and she made it through. She became significantly important in the civil rights movement.