STAT 701 Spring 2007
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Homework 3
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Do the following problems from the textbook:

8.3, 8.8(a,b,c), 8.11,
9.2, 9.4, 9.5, 9.10(c), 9.11, 9.18,  
10.3, 10.8, 10.9(a,c,e), 10.12(a,b,d)

NOTE: Problems 8.8, 8.11, 9.10(c), 9.11, 9.18, 10.8, 
10.9(a,c,e), and 10.12(a,b,d) require analysis 
using a computer package such as SAS or R.


NOTE: You do not need to do the plot in 8.8(a).

NOTE: For 10.9(a) & 10.12(a), you may find the 
internally studentized residuals and compare 
their absolute values to 2.5 instead of doing the
Bonferroni outlier test.  For 10.9(e) and 10.12(d),
don't worry about the DFBETAS.

The "Job Proficiency", "Brand Preference", and 
"Commercial Properties" data sets are given on the 
course web page.

Please write your answers neatly and clearly!