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parametric test


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(pa-ră-met-rik)

a test of statistical significance based on the assumption that the range of observations are distributed by chance in a normal distribution (see frequency distribution), where 95% of observations lie within two standard deviations of the mean (Student's t test to compare means). Nonparametric tests ( Mann-Whitney U tests) make no assumptions about distribution patterns.

Subjects: Medicine and Health.


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