* do-file for Supplementary Exercise 10.33 of IPS7e
version 13 /* works also with version 14 */

import delimited "H:\VHM\VHM801\Datasets\csv\Chapter 10\ex10_033.csv"
summarize retinol crp, d
twoway (scatter retinol crp) (lfit retinol crp)
regress retinol crp
predict stdres, rstandard
qnorm stdres
histogram stdres
predict fit
scatter stdres fit