Statistics are generally collected on the assumption that religion is a categorical variable.

A common case for this is where the events each cover an outcome of a categorical variable.

The linking can be one-to-one, or according to the values of a categorical variable in the data set.

An independent variable, either categorical or continuous, controlled by the experimenter.

Examples of values that might be represented in a categorical variable:

This type of interaction arises when we have two categorical variables.

The comparison between two categorical variables was made with the χ 2 test.

This model is the same as above, but in addition, each of the categorical variables has a child variable dependent on it.

Instead, the choice of which prior to use is dependent on another random categorical variable.

A dimensional data element is similar to a categorical variable in statistics.