*
* Example MULT.DAT from pp 413-414
*
open data mult.dat
data(format=free,org=columns) 1 100 x1 x2 x3 x4 y
*
cmom(corr,print)
# x1 x2 x3 x4 y
*
linreg y
# constant x2 x3
linreg y
# constant x1 x2 x3
linreg y
# constant x2 x3 x4
linreg y
# constant x1 x2 x3 x4