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Re: st: group difference


From   David Hoaglin <dchoaglin@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: group difference
Date   Sun, 26 May 2013 16:05:04 -0400

Education level and gender composition seem very likely to be
categorical, and income may be categorical.  A t-test would usually
not be appropriate.

To make matters more interesting, the categories of education level
(and income, if categorical) are ordered.  The -ologit- command with
race/ethnicity as the predictor would be a good place to start.

David Hoaglin

On Sun, May 26, 2013 at 3:55 PM, Daifeng He <dhe.statlist@gmail.com> wrote:
> I thought -ttest- does the job you want.
>
> Best,
> Daifeng
>
> On Sun, May 26, 2013 at 3:51 PM, Seok-Woo Kwon <kwonsw@gmail.com> wrote:
>> I want to test whether the mean of some variables are different across
>> groups. For example, I want to test whether income, education level, and
>> gender composition are different by groups defined by ethnicity (e.g.,
>> white, black, and Hispanic). So, I want to see a 2-way comparison (white vs.
>> black, white vs. hispanic, black vs. Hispanic) of income, education level,
>> and gender composition in the sample. Any suggestions which stata command
>> will do this?
>>
>>
>> Thank you.
>>
>> Seok-Woo
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