Examlex
If a researcher is concerned with having high external validity in their study, she should design a
Population Distribution
The spread of frequencies or occurrences of varying characteristics within a population.
Probability Distributions
Describes how the probabilities are distributed over the values of a random variable, identifying the likelihood of different outcomes.
Wilcoxon Rank Sum Test
A non-parametric test used to compare two independent samples to determine whether there is a significant difference between their distributions.
Kruskal-Wallis Test
A non-parametric statistical test that determines if there are statistically significant differences between two or more groups of an independent variable on a continuous or ordinal dependent variable.
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