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What is Understanding Two-Sample T-Test Basics about?

The two-sample t-test is used to determine if the means of two independent groups are statistically significantly different from each other. It compares the difference between two sample means to the standard error of the difference. The test can be performed with either pooled or unpooled variance estimates depending on whether the variances are assumed to be equal between the groups. With pooled variance, the degrees of freedom are larger, increasing the power of the test.

Author

JOMALYN J. NUEVO

Language

EN