Jeph,
Thanks, not something I was aware of as existing in such a specific manner.
Graham
2009/10/10 Jeph Herrin <[email protected]>:
>
> Look up the Asymptotic Relative Efficiency (ARE) of the Mann
> Whitney, a lower bound for scaling versus the t-test - with fairly
> mild assumptions you can know you are safe with something like 1.6
> times the sample size for a t-test.
>
> hth,
> Jeph
>
>
>
> Graham Smith wrote:
>>
>> Can anyone point me towards any help for doing a power analysis for a
>> Mann-Whitney test (I'm still using v8 of stata if it matters)
>>
>> Many thanks,
>>
>> Graham
>> *
>> * For searches and help try:
>> * http://www.stata.com/help.cgi?search
>> * http://www.stata.com/support/statalist/faq
>> * http://www.ats.ucla.edu/stat/stata/
>>
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
>
*
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* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
