vcd (version 0.9-0)

assocstats: Association Statistics

Description

Computes the Pearson chi-Squared test, the Likelihood Ratio chi-Squared test, the phi coefficient, the contingency coefficient and Cramer's V.

Usage

assocstats(x)

Arguments

x

an $r \times c$ table.

Value

• A list with components:
• chisq.tests
  a $2 \times 3$ table with the chi-squared statistics.
• phi
  The phi coefficient.
• cont
  The contingency coefficient.
• cramer
  Cramer's V.

References

Michael Friendly (2000), Visualizing Categorical Data. SAS Institute, Cary, NC.

Examples

data(Arthritis)
tab <- xtabs(~Improved + Treatment, data = Arthritis)
summary(assocstats(tab))