T-Test. The purpose of t test (Gosset, 1908) is to compare two means. It assesses whether two means are statistically different. It can assess the difference between two groups or two variables. Limitations.
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.
Independent-samples t test
Test variables: select the variables
Grouping variable: select the group variable
Define groups: type codes
(e.g., control=0, treatment=1)
Click Continue, then OK
Paired-Samples T Test
Paired variables: Select pre-post variables
Confidence interval: 95%
Missing values: exclude cases analysis by analysis
Experim3ED example (cont.)