STAT 705 Spring 2021 ------------------ Homework 1 ---------- Do the following problems from the textbook: 8.12, 8.13, 8.14, 8.16, 8.21, 8.22, 8.27, 8.28, 8.34, 8.35(a,b)** 16.1, 16.2, 16.4(b), 16.6, 16.8(b,c,d,e,f), 16.10(b,d,e,f), 16.15, 16.19(a,b,c) NOTE: For 8.16(d), if this plot shows random scatter, then the interaction term is probably not necessary. **NOTE: For 8.35(b), note the book has an error in equation (6.25). It should be: b = (X'X)^{-1} X'Y The relevant data sets can be found on the course web page.