Paired Samples t Test2
Автор: Sharon Pruitt
Загружено: 2026-02-13
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Module 5 Video Summary
Paired-Samples t-Test Analysis of Coaching Intervention
A-paired-samples t-test was conducted to evaluate whether a 15-minute coaching session significantly improved bowling scores. Pre-coaching scores (M = 90.00, SD = 13.54) were compared to post coaching scores (M = 94.95, SD = 14.32) for 20 participants. Although scores increased by 4.95 points (5.5%), the difference was not statistically significant, t(19) = -1.69,
p = .108. The 95% confidence interval for the mean difference ranged from -11.10 to 1.20.
Cohen’s d =0.38 indicated a small effect size. While the improvement suggests modest practical gains, the results do not provide sufficient statistical evidence to conclude that a single 15-minute coaching session significantly improves bowling performance.
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