Analyzing the association between categorical variables

5 important questions on Analyzing the association between categorical variables

How do we call percentages for all the conditions in the dependent variable, for one condition of the independent variable?

conditional percentages.

How do we call conditional percentages converted to proportions?

conditional probabilities.

When are two categories independent, or associated?

if the conditional distributions are not identical.
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How do we call the the mean of a distribution in a single cell in the contingency table? how much do you expect to be in this cell?

expected cell count.

What statistic is used to summarize how far the cell counts fall from the expected cell counts, and therefor summarize if there's independence or not?

chi-squared statistic.

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