pedometrics (version 0.6-3)

cramer: Association between categorical variables

Description

Compute the Cramer's V, a descriptive statistic that measures the association between categorical variables.

Usage

cramer(x)

Arguments

x

Data frame or matrix with a set of categorical variables.

Value

• A matrix with the Cramer's V between the categorical variables.

Details

Any integer variable is internally converted to a factor.

References

Cramér, H. Mathematical methods of statistics. Princeton: Princeton University Press, p. 575, 1946.

Everitt, B. S. The Cambridge dictionary of statistics. Cambridge: Cambridge University Press, p. 432, 2006.

See Also

assocstats

Examples

data <- read.csv("http://www.math.smith.edu/r/data/help.csv")
data <- data[, c("female", "homeless", "racegrp")]
str(data)
test <- cramer(data)
test