Examlex
A major pollutant in the streams of developing nations is raw sewage.
Rejection Region
The range of values for which the null hypothesis is considered unlikely and is therefore rejected in hypothesis testing.
Wilcoxon Rank Sum Test
The Wilcoxon Rank Sum Test is a non-parametric statistical test used to compare two independent samples to assess if their population mean ranks differ.
Population Distributions
Represents the spread of values, or observations, of a particular variable across an entire population.
Nonparametric Tests
Statistical tests that do not assume a specific distribution for the data, used for analyzing ordinal or nominal data with unknown parameters.
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