Updated appendix C (software instructions). Key changes: (1) use the "arm" package in R rather than downloading regression.R, (2) corrected example for overdispersed Poisson regressions in SAS.

Some pages were misformatted in the first printing (after the copyediting stage!): in pdf format, pages 159, 160, 398, 408, 471, 473, 492, 521, 554, 555, 558, 559, 560, 562. (In postscript format, pages 159, 160, 398, 408, 471, 473, 492, 521, 554, 555, 558, 559, 560, 562.) No important information is missing in the printed copy; it's just that some of the labels on some graphs didn't get printed.

Also there were a few minor typos here and there. See also this list of errata which remained in the second printing.

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