*
* Examples from pages 811-813
*
cal(q) 1970
open data table21-1.prn
data(format=prn,org=columns) 1970:1 1991:4
*
* This uses the BJIDENT procedure, which is described in gujap809.
*
@bjident(number=25) gdp
*
* The instruction CORRELATE with the QSTATS option computes and prints the
* autocorrelations and Ljung-Box Q. The output in the text isn't correct. Note
* also that LB tests the null that the series is white noise, which is not the
* same as stationarity.
*
corr(qstats,number=25) gdp