st: RE: query on testing uniform distributions

[Sergio Salis <S.Salis@psi.org.uk>]

Dear Marteen,

Many thanks for your response. You suggest using

-quantile employment_start_dates, aspect(1)

to graphically test whether employment_start_dates follow a uniform distribution. (I can see from the graph it does.)

I understand that to check whether employment_start_dates follow a uniform distribution I can also use the ksmirnov test. It is not clear to me what the command -ksmirnov hazel=hazel- actually does (so I would appreciate if you could provide some further explanation on this). However, if employment_start_dates was a continuous variable I would use

-ksmirnov employment_start_date=14341+int((14705-14341+1)*runiform())

where 14705 is the first and 14341 the last day of the tax year of interest. Is this syntax line correct in case one deals with a continuous variable? If so, how can it be changed to deal with a discrete variable, which is my case?

Many thanks for your help.

Sergio




*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/