(* PS7.4, using DATA7-3, for Practice Problem 7.2 *)
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
