file output h:\buec333\output3.txt
sample 1 81
read (h:\buec333\real_est.dat)ask sell time lot rms bdrms rec
ols sell ask time lot

***************************************************
*
*	Extra Testing
*
*	The constant and lot don't look good, but
*	the high R-square means their might be
*       multicollinearity, which means we might no want
*	to drop them both.   An easy way to F-test this
*       is shown as follows:
*
***************************************************

genr constant=1

ols sell constant ask time lot / noconstant

test
test constant=0
test lot=0
end

stop