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Left-tailed Wilcoxon Rank Sum Test
A nonparametric test used to assess whether one of two groups of independent samples tends to have lower values than the other.
Test Statistic
A calculated value from sample data used to test a hypothesis against a null hypothesis.
Independent Samples
Two or more groups of samples that are collected from separate populations and are not related or paired in any way.
Significance Level
The threshold below which a p-value results in the rejection of a null hypothesis, indicating statistical significance; commonly set at 0.05 or 5%.
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