coin (version 1.0-24)

statistic-methods: Extract Test Statistics, Linear Statistics and Standardized Statistics

Description

Extract the test statistic and, possibly multivariate, linear statistics in their raw and standardized form from objects of class IndependenceTest-class.

Usage

statistic(object, type = c("test", "linear", "standardized"), ...)

Arguments

object

an object inheriting from class IndependenceTest-class.

type

either test for test statistic, linear for the unstandardized linear statistic or standardized for the standardized linear statistic.

...

further arguments (currently ignored).

Examples

df <- data.frame(y = gl(4, 5), x = gl(5, 4))

  ### Cochran-Mantel-Haenzel Test
  ct <- cmh_test(y ~ x, data = df)

  ### chi-squared statistic
  statistic(ct)

  ### the linear statistic, i.e, the contingency table
  statistic(ct, type = "linear")

  ### the same
  table(df$x, df$y)

  ### and the standardized contingency table for illustrating
  ### departures from the null hypothesis of independence of x and y
  statistic(ct, type = "standardized")