![]() ![]() You can use a chi-square goodness of fit test when you have one categorical variable. However, we often think of them as different tests because they’re used for different purposes. Mathematically, these are actually the same test. The two types of Pearson’s chi-square tests are: There are a minimum of five observations expected in each group or combination of groups.The sample was randomly selected from the population. ![]() Alternatively, you could convert the quantitative variable into a categorical variable by separating the observations into intervals. If one or more of your variables is quantitative, you should use a different statistical test.
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