The related-samples t test makes tests concerning the difference between pairs of measured scores.

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The related-samples t test, also known as paired-samples or dependent-samples t test, is used to compare the means of two related groups or sets of measurements. It contrasts the difference between pairs of scores from the same group or individual, making it suitable for repeated-measures or within-subjects designs.

The Related-Samples T Test Makes Tests Concerning the Difference Between