What is the paired-samples t test statistic for the following difference scores: 2, 6.5, 3, 7.8, 10, 4.2?
A) 7.10
B) 5.58
C) 4.46
D) 1.25

Question

Quizplus · Accepted Answer

The paired-samples t-test statistic is calculated using the formula: t = M / (SD/√n), where M is the mean of the difference scores, SD is the standard deviation of the difference scores, and n is the number of pairs. For the given difference scores (2, 6.5, 3, 7.8, 10, 4.2), the mean (M) is 5.58, and the standard deviation (SD) is approximately 2.97. With n = 6 pairs, the t statistic is calculated as follows: t = 5.58 / (2.97/√6) ≈ 4.46.

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