I am very new to SAS and still tyring to understand the results tables that are produced.  I have been asked to run a Welch's two sample t-test on a data set.  I am able to run the process t-test using the 't Tests' under the Tasks and Utilities.  However for the Welch's test that refers to an unequal variance, I am unsure where in the code you tell it that your sample has unequal variances.  Or is that you refer to 'Pooled' or 'Satterwaite' rows when you need to refer to the numbers produced?  I can see that in in one of the result boxes that are produced it calculates variances on 'Pooled' and 'Satterwaite'.  Do I look to see which variance is unequal and those will be the Welch's results I should use?   Appreciate the insight. ... View more