statistic-methods {coin}R Documentation

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).

Methods

statistic

extracts the specified statistic from object.

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")


[Package coin version 1.0-24 Index]