Within subjects t tests. Related samples Difference scores t tests on difference scores Advantages and disadvantages. Related Samples. The same participants give us data on two measures e. g. Before and After treatment Usability problems before training on PP and after training
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
D and sD = mean and standard deviation of differences.
df = n - 1 = 9 - 1 = 8
Cannot compute pairwise differences, since we cannot compare two random people
We want to test differences between the two sample means (not between a sample and population)