Re: Question on Weighting

Posted by Mark Miller on Sep 12, 2014; 8:07pm
URL: http://spssx-discussion.165.s1.nabble.com/Question-on-Weighting-tp5727231p5727239.html

Barry

Exactly right.

Normalization (dividing by Mean Weight) gives you the proper N for p-values.

... Mark Miller

On Fri, Sep 12, 2014 at 12:48 PM, Barry DeCicco <[hidden email]> wrote:

"In either case, the weights are still proportional, so Div by Mean or Div by Sum will not change proportions.
Ordinarily, the choice would be to transform the weights so that Sum of Weights = N of Observations.
That would be dividing by the Mean Population Weight."

Yes, it looks like that's what I should be doing.  The main thing that I'm now concerned about are p-values.  It seems that whenever doing any analysis with weights, I'll need to normalize first.

Barry

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