Chi-Square is a statistical test that can be used to analyze results from categorical variables. Categorical variables are variables that contain clearly different groups. The chi-square statistic is used with frequency data.
The chi-square value is reported with a probability (p) value indicating significance.
For example, we can use chi-square to test for an association between frequency of attendance at organizational meetings and age groups (category variable).
Common measures of effect size associated with chi-square analyses are Cramer’s V or the phi coefficient.
Read more about Chi Square and other statistics in the following books.
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