Study design

Requirements

• 2 categorical variables.

or:

• A qualitative response variable.
• A categorical factor variable with 2 or more levels.

or:

• 2 or more repeated measurements on a qualitative response variable.

Dataset layout

Use a column for each variable (Eye color, Hair color); each row has the values of the variables.

Frequency form dataset layout

Use a column for each variable (Eye color, Hair color) and a column for the number of cases (Frequency); each row has the values of the variables and the frequency count.