What is the chi-squared test? The chi-squared test, often written as χ 2 test, is a statistical hypothesis test used in the analysis of categorical variables to determine whether observed data are ...
The contingency table in Output 28.5.1 displays eye and hair color in the order in which they appear in the Color data set. The Pearson chi-square statistic in Output 28.5.2 provides evidence of an ...
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