# Question

In the text I have recommended against the use of stepwise procedures for multiple regression, whereby we systematically hunt among the variables to predict some sort of optimal equation.

(a) Explain why I would make such a recommendation.

(b) How, then, could I justify asking you to do just that in Exercise 11.12?

(a) Explain why I would make such a recommendation.

(b) How, then, could I justify asking you to do just that in Exercise 11.12?

## Answer to relevant Questions

Use the table of random numbers (Table E.9 in the Appendix) to generate data for 10 cases on six variables, and label the first variable Y and the following variables X1, X2, X3, X4, and X5. Now use any regression program to ...A great source of data and an explanation to go with it is an Internet site called the Data and Story Library (DASL) maintained by Carnegie Mellon University. Go to that site and examine the example on the relationship ...In Exercise 11.2, which variables make a significant contribution to the prediction of Optimism as judged by the test on their slopes? In Exercise 11.2, The data referred to in Exercise 12.10 (in pounds gained) follow. Run the appropriate t test and draw the appropriate conclusions. I drew 50 samples of 5 scores each from the same population that the data in Exercise 12.1 came from, and calculated the mean of each sample. The means are shown below. Plot the distribution of these means.Post your question

0