I would certainly agree that given the post below, it is almost
impossible to offer much more than vague suggestions: simple, short,
reproducible examples per the posting guide rather than lengthy
complex code is required (although there are clever, perseverant folks
who may give it a go).
However
?by ?aggregate
On Tue, Mar 6, 2012 at 4:14 PM, Walter Anderson wrote:
> I needed to compute a complicated cross tabulation to show weighted means
> and standard deviations and the only method I could get that worked uses a
> series of nested for next loops. I know that there must be a better wa
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