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re: st: Collapse with sum function and missing values: correction


From   "Airey, David C" <david.airey@Vanderbilt.Edu>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   re: st: Collapse with sum function and missing values: correction
Date   Wed, 10 Feb 2010 10:38:21 -0600

.

Agreed.

> <>
> Sorry, misinterpreted Michael's grouse in the last message. I agree that the _sum_ of x should be missing, as should all other descriptive stats except the -count-. The -count- of non-missing values is zero, but their -sum- is surely missing --- as it would be reported by -tabstat-.
> 
> Kit



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