drugs {asbio}

Contingency data for high school marijuana, alcohol, and cigarette use

Description

Agresti (2012) included a three way contingency table describing cigarette, alcohol, and marijuana use of high school students in Dayton Ohio.

Usage

data(drugs)

Format

A data frame with 8 observations on the following 4 variables.

alc

Alcohol use. A factor with levels N Y.

cig

Cigarette use. A factor with levels N Y.

mari

Marijuana use. A factor with levels N Y

count

Counts for the cross-classification.

Source

Agresti, A. 2012. Categorical Data Analysis, 3rd edition. New York. Wiley.