help me -
For a two-sample t-test with unequal variances, df depends on sample
variances and sample sizes.
In the Office Online Help of Excel 2003, select the "About statistical
analysis tools" topic, expand the "t-Test" section, and you'll see the
formula for df.
Or, look at the "Unequal sample sizes, unequal variance" section of
http://en.wikipedia.org/wiki/Student's_t-test
- Mike Middleton
http://www.DecisionToolworks.com
Decision Analysis Add-ins for Excel
