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st: Difference of means and t-test

Subject   st: Difference of means and t-test
Date   Sat, 12 Jun 2010 23:41:00 +0200 (CEST)

Dear Statalist,

I am working with three different samples.
When I deal with two of them, I can calculate the difference of means and
t-test by doing:

ttesti obs1 mean1 std1 obs2 mean2 std2, unequal

As I have three groups, I am also interested in testing the null: mean1 =
mean2 = mean3 , under the alternative that at least one mean is different.

Could you please give me some advice?

Thanks in advance.

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