Description

Data collected from 592 students in an introductory statistics class

Usage

Format

A data frame with 16 observations on the following 3 variables.

y

count of the number of student with given hair/eye combination

eye

a factor with levels green hazel blue brown

hair

a factor with levels BLACK BROWN RED BLOND

Source

Snee R. (1974) Graphical display of two-way contingency tables. American Statistician, 28, 9-12