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Re: st: how to check the reliability and validity of the data


From   David Airey <david.airey@vanderbilt.edu>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: how to check the reliability and validity of the data
Date   Sat, 22 Mar 2008 22:29:56 -0500

.

I will bet that others will also say you have not provide enough information to give a good answer. What do you mean be reliability and validity, exactly?

-Dave

On Mar 22, 2008, at 10:04 PM, George Huang wrote:

Dear all:

I have a database with 72,878 observations which can be grouped into 2,800 average time of different activities. Therefore, there are 2,800 means and 2,800 S.D. for the activity time. How can I know the reliability and validity of each activity time? Should I use nonparametric statistics or chisquare test?

Thanks a lot for your help!

George Huang
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