In Exercise 11.2, the column headed “Tolerance” (which you have not seen before) gives you 1 minus the squared multiple correlation of that predictor with all other predictors. What can you now say about the relationships among the set of predictors?
Answer to relevant QuestionsUsing the following (random) data, demonstrate what happens to the multiple correlation when you drop out cases from the data set (e.g., use 15 cases, then 10, 6, 5, 4). In Exercise 5.21 we saw, among other things, the weight gain of each of 29 anorexic girls who received cognitive behavioral therapy. What null hypothesis would we likely be testing in this situation? In Section 12.3 we ran a t test to test the hypothesis that young children under stress give what they perceive to be more socially desirable answers on an anxiety measure than normal children do. We never really tested the ...In what way would the result in Exercise 12.2 differ if you had drawn 50 samples of size 15? Assume that the mean and the standard deviation of the difference scores in Exercise 13.6 would remain the same if we added more subjects. How many subjects would we need to obtain a t that is significant at a 5 .01 ...
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