11.8: Chapter Key Terms

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Contingency Table: a table that displays sample values for two different factors that may be dependent or contingent on one another; it facilitates determining conditional probabilities.

Goodness-of-Fit: a hypothesis test that compares expected and observed values in order to look for significant differences within one non-parametric variable. The degrees of freedom used equals the (number of categories – 1).

Test for Homogeneity: a test used to draw a conclusion about whether two populations have the same distribution. The degrees of freedom used equals the (number of columns – 1).

Test of Independence: a hypothesis test that compares expected and observed values for contingency tables in order to test for independence between two variables. The degrees of freedom used equals the (number of columns – 1) multiplied by the (number of rows – 1).

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