* PS6.4, using DATA4-1, for Practice Problems 6.5 and 6.6 of Section 6.4 *) sample 1 14 read(data4-1) price sqft bedrms baths * generate square of sqft genr sqft2=sqft*sqft * obtain logarithm of sqft genr lsqft=log(sqft) * Practice Problem 6.5 ols price sqft sqft2 * Practice Problem 6.5 ols price lsqft * Practice Problem 6.6 ols price lsqft baths stop