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Re: st: Inequality Hypothsis test

From   Asgar Khademvatani <>
Subject   Re: st: Inequality Hypothsis test
Date   Tue, 14 Aug 2007 05:12:01 -0600

Dear Maarten:

Thanks for the reply. Actually, I have already tried the inequality test by < = or > = sign as well, b but Stata gives error. I am not sure what is wrong?


Maarten buis wrote:

--- Asgar Khademvatani <> wrote:

Actually, I am trying to test an inequality hypothesis after
estimation command such SURE. I tried stata test command and other
given commands for hypothsis testing but I could not. Can you
please let me know how can I test an inequality hypothesis on Stata?

You can't do that in Stata or in any other package. Remember what a
statistical test is supposed to give you: the probability of drawing
the sample you observed, or a more extreme sample, given that your null
hypothesis is true. So we need to create a distribution of samples
given that he null hypothesis is true. In order to create such a
distribution the null hypothesis must contain an equal sign (either
equal in case of a two sided test, or less than or equal to or more
than or equal to in case of a one sided test).

Hope this helps,

Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

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