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Chapter 9 two-sample tests paired t test (correlated groups t test) paired t test calculation the calculation of the paired test statistic comes from a modificat . (the practice of statistics, by yates, variability of a statistic] assignment #54 two-sample z statistic, two-sample t statistic,. The mean, median, and mode are equivalent when the distribution is unimodal and symmetrical however, with asymmetry, the median is approximately one -third the distance between the mean and.
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