can a pre and post sample be paired? can you do paired test to determine the sample size can pre and post surveys be paired can a pre and post sample be paired can you do pre or post paired t tests is there a test to see if the sampling is different from pre and post surveys what is the sampling difference between a pre and post survey? what is the difference between a pre- and post-sample study how to tell the difference between a pre and post survey can i test for difference in sample sizes paired t test how do you measure sample size how does paired t test work how many students will respond to post study do paired tests have the same sampling sizes? what is the difference between a pre- and post survey? how many participants in a post survey how much sample sizes are there in a post survey? can someone do a paired test can i test a pre and post survey what is the paired test for post survey