Test whether to drop regressors from a regression.
Tests the hypothesis that the listed variables were incorrectly included in the estimated equation (only available for equations estimated by list). The test displays some combination of and LR test statistics, as well as the test regression.
Syntax
eq_name.testdrop(options)arg1[arg2 arg3 ...]
List the names of the series or groups of series to test for omission after the keyword.
Options
prompt
Force the dialog to appear from within a program.
p
Print output from the test.
Examples
equation oldeq.ls sales c adver lsales ar(1)
oldeq.testdrop adver
tests whether ADVER should be excluded from the specification for SALES using a the equation OLDEQ.