topic Re: Which value in ttest procedure tells you that the means are statistically different in SAS Programming

Which value in ttest procedure tells you that the means are statistically different

sasgyro — Tue, 30 Jun 2020 15:49:56 GMT

when running a ttest on the same variable of two different datasets, what value in the result of PROC TTEST function gives the p value that confirms the means are statistically different or random? IM not familiar with the notation

Re: Which value in ttest procedure tells you that the means are statistically different

ballardw — Tue, 30 Jun 2020 16:00:00 GMT

You would be looking for the Pr > |t| (probability of getting a larger T statistic) column is the p-value.

The ROW depends on whether you have equal or unequal variances

Several of the SAS output table will reflect different test statistics so the Pr>T, Pr> F ( a larger F statistic) depending on the proc and options used.

Re: Which value in ttest procedure tells you that the means are statistically different

Reeza — Tue, 30 Jun 2020 16:18:33 GMT

Here's an annotated output walk through of the PROC TTEST output.
https://stats.idre.ucla.edu/sas/output/proc-ttest/