calculate difference means when groups have different (n)

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Oscar - 20 Apr 2007 23:05 GMT

I need to run a test for a diference between means when the groups have
different numbers (n). Please post to newsgroups or remove the pound sign
in return address.

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Stan Brown - 21 Apr 2007 02:10 GMT

Fri, 20 Apr 2007 15:05:33 -0700 from Oscar <L3214@hotmail.com>:

> I need to run a test for a diference between means when the groups have
> different numbers (n). Please post to newsgroups or remove the pound sign
> in return address.

Enable the Analysis Toolpak and Analysis Toolpak -VBA in Tools | Add-
ins. (If they're not listed there, you'll run the Office installer to
make them available.)

Then click Tools | Data Analysis and select one of the two-sample t
tests.

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Stan Brown, Oak Road Systems, Tompkins County, New York, USA
http://OakRoadSystems.com/

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Jerry W. Lewis - 21 Apr 2007 04:10 GMT

See Help for the TTEST worksheet function. Only Type=1 requires both groups
to be the same size.

Jerry

> I need to run a test for a diference between means when the groups have
> different numbers (n). Please post to newsgroups or remove the pound sign
> in return address.

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