* PS3.2, using data file DATA3-1, for Section 3.6 on changing units
read(data3-1) price sqft
ols price sqft  
*  price in dollars  
genr price2 = price*1000
*  estimate new model  
ols price2 sqft  
*  sqft in hundredths  
genr sqft2 = sqft/100
*  estimate new model  
ols price sqft2  
*  both units changed  
ols price2 sqft2  
stop