prussian {pscl}

Prussian army horse kick data

Description

Deaths by year, by corp, from horse kicks.

Usage

data(prussian)

Format

A data frame with 280 observations on the following 3 variables.

y

a numeric vector, count of deaths

year

a numeric vector, 18XX, year of observation

corp

a factor, corp of Prussian Army generating observation

Source

von Bortkiewicz, L. 1898. Das Gesetz der Kleinen Zahlen. Leipzig: Teubner.

Examples

data(prussian)
corpP <- glm(y ~ corp, family=poisson,data=prussian)
summary(corpP)