Description

This data set features calcium concentration in the plasma of birds of both sexes following a hormonal treatment.

Usage

Format

A data frame with 20 rows and 3 variables.

Calcium

calcium concentration in mg/100 ml in the blood of birds.

Hormone

a factor with two levels indicating whether the bird received a hormonal treatment or not.

Sex

a factor with two levels coding for the sex of birds.

Details

Zar (1984, p. 206) illustrates a two-way ANOVA with interaction with this data set.

Source

Zar, J. H. (1984) Biostatistical analysis. Second edition. Prentice Hall: Englewood Cliffs, New Jersey.

Examples