Give two examples of studies in which our primary interest is in looking at group differences.
Answer to relevant QuestionsHow might you redesign our study of morphine tolerance to involve three groups of mice to provide more information on the question at hand? Give one example each of a nominal, ordinal, interval, and ratio measure. Using the data from Exercise 2.16, (a) Calculate (SY)2 and SY2. (b) Given the answers to (a), calculate (c) Calculate the square root of the answer to (b). (You will come across these calculations again in Chapter 5.) The Chicago Tribune of July 21, 1995, reported on a study by a fourth grade student named Beth Peres. In the process of collecting evidence in support of her campaign for a higher allowance from her parents, she polled her ...How would you describe the distributions of the grades of students who did, and did not, attend class in Figure 3.4? Why would you have expected this kind of distribution even before you saw the data?
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