In Chapter 3 (Figure 3.5) we saw data on grades of students who did and did not attend class regularly. What are the mean and median scores of those two groups of students? (The data are reproduced here for convenience.) What do they suggest about the value of attending class?
Answer to relevant QuestionsSeligman, Nolen-Hecksema, Thornton, and Thornton (1990) classified participants in their study (who were members of a university swim team) as Optimists or Pessimists. They then asked them to swim their best event, and in ...A group of 15 rats running a straight-alley maze required the following number of trials to perform to a predetermined criterion. The frequency distribution follows: Calculate the mean and median number of trials to ...Create a boxplot for the variable ADDSC in Appendix D. These data are available at https://www.uvm.edu/~dhowell/fundamentals8/DataFiles/Add.dat. In Section 5.10, statistics were computed from the reaction time data in Chapter 3. What would you conclude from these data about the relationship between accuracy and reaction time? Given the data you created in Exercise 5.6, show that multiplying or dividing by a constant multiplies or divides the standard deviation by that constant. How does this relate to what happens to the mean under similar ...
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