STAT 420
Fall 2008
Homework #8
(due Friday, October 24, by 3:00 p.m.)
From the textbook:
6.7
(a),
(b)
________________________________________________________________________
2.
The dataset
prostate
comes from a study on 97 men with prostate cancer
who were due to receive a radical prostatectomy.
(
Andrews D. F. and Herzberg
A. M. (1985): Data. New York: SpringerVerlag
).
> library(faraway)
> data(prostate)
> prostate[1:5,] # to see what the data set looks like
lcavol lweight age lbph svi lcp gleason pgg45 lpsa
1 0.5798185 2.7695 50 1.386294 0 1.38629 6 0 0.43078
2 0.9942523 3.3196 58 1.386294 0 1.38629 6 0 0.16252
3 0.5108256 2.6912 74 1.386294 0 1.38629 7 20 0.16252
4 1.2039728 3.2828 58 1.386294 0 1.38629 6 0 0.16252
5 0.7514161 3.4324 62 1.386294 0 1.38629 6 0 0.37156
> attach(prostate)
OR
The data set is also available at
http://www.stat.uiuc.edu/~stepanov/prostate.csv
lcavol
log(cancer volume)
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 Spring '10
 Stepanov
 Normal Distribution, Regression Analysis, Errors and residuals in statistics, Residual standard error

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