If the sample size is less than 15,the correlated groups t test may show inflated Type I errors for data that are markedly skewed.

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Quizplus · Accepted Answer

This is true. The correlated groups t test assumes that the data is normally distributed and if the sample size is less than 15, the t test may not accurately reflect the distribution of the data, leading to inflated Type I errors if the data is highly skewed. In such cases, non-parametric tests may be more appropriate.

If the Sample Size Is Less Than 15,the Correlated Groups