![]() Specifically, you use an independent t-test to determine whether the mean difference between two groups is statistically significantly different to zero.įor example, an independent t-test could be used to test whether revision time amongst college students differed based on gender (i.e., your dependent variable would be "revision time", measured in minutes or hours, and your independent variable would be "gender", which has two groups: "male" and "female"). The independent t-test, also referred to as an independent-samples t-test, independent-measures t-test or unpaired t-test, is used to determine whether the mean of a dependent variable (e.g., weight, anxiety level, salary, reaction time, etc.) is the same in two unrelated, independent groups (e.g., males vs females, employed vs unemployed, under 21 year olds vs those 21 years and older, etc.). Independent t-test using Stata Introduction
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