*
* Example 8/1/2 from pp 393-395
*
open data jcars.dat
calendar 1947
data(format=free,org=columns) 1947:1 1989:1 jcars
*
set trend = t-1963:1
*
* Run the regression over the data from 1964:1 on
*
boxjenk(regressors,ar=1,maxl) jcars 1964:1 *
# constant trend
@regcorrs