Repeat the analysis of Exercise 15.24, requesting statistics on regression diagnostics. a. What, if anything, do these statistics tell you about the data set? b. Delete the subject with the largest...

Repeat the analysis of Exercise 15.24, requesting statistics on regression diagnostics. a. What, if anything, do these statistics tell you about the data set? b. Delete the subject with the largest measure of influence (usually indexed by Cook’s D). What effect does that have for this particular data set?

Use the data set Mireault.dat from Mireault (1990), described in the Appendix and found on the Web site for this book, to examine the relationship between current levels of depression and other variables. A reasonable model might propose that depression (DepressT) is a function of (1) the person’s current perceived level of vulnerability to additional loss (PVLoss), (2) the person’s level of social support (SuppTotl), and (3) the age at which the person lost a parent during childhood (AgeAtLos). Use any statistical package to evaluate the model outlined here. (Because only subjects in Group 1 lost a parent to death during childhood, your analysis will be restricted to that group.)