/usr/share/gretl/scripts/ps7-4.inp is in gretl-common 2016a-1.
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1 2 3 4 5 6 7 8 9 | # PS7.4, for Practice Problem 7.2
open data7-3
genr lsqft = log(sqft)
# Model A'
ols price 0 lsqft
# Model E'
ols price 0 lsqft bedrms baths pool famroom firepl
# Model F'
ols price 0 lsqft pool
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