While we are on this subject:
> I do not understand what
> this SAS output from PROC FREQ is telling me:
WARNING: 33% of the cells have expected counts less
than 5. Chi-Square may not be a valid test.
Does anyone have the url that explains the algorithm
that sas uses to generate its
'you probably don't want to trust these numbers'
Ronald J. Fehd, IT Spec
team lead: Office of Statistical Software
and Knowledge Worker Support
HelpDesk Level 3: SAS