calcium | R Documentation |
This data set features calcium concentration in the plasma of birds of both sexes following a hormonal treatment.
data(calcium)
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.
Zar (1984, p. 206) illustrates a two-way ANOVA with interaction with this data set.
Zar, J. H. (1984) Biostatistical analysis. Second edition. Prentice Hall: Englewood Cliffs, New Jersey.
data(calcium)
str(calcium)
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