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Re: st: Chi-square test for Categorical Data Analysis


From   "Austin Nichols" <austinnichols@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Chi-square test for Categorical Data Analysis
Date   Wed, 19 Sep 2007 11:31:21 -0400

David Radwin <radwin@berkeley.edu>:

I think it's fairly easy to prove via counterexample or simulation
that this can easily give the wrong answer.  Can you give a reference
that supports it?

On 9/18/07, David Radwin <radwin@berkeley.edu> wrote:
> [This email did not appear to go through the first time, and I
> apologize if this is the second time you are seeing it.]
>
> Hugh,
>
> Another possibility is to approximate a continuous measure of income
> by using the midpoint of the range as the actual value. So, for
> example, the first value would be $12,500, the second would be
> $75,000, etc.
> Then you can calculate and report estimated group means for A and B
> and the difference between them, and you can also do the usual
> difference-of-means hypothesis testing.
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