SpearmanTest {coin}R Documentation

Spearman's Test on Independence

Description

Testing the independence of two numeric variables.

Usage

## S3 method for class 'formula':
spearman_test(formula, data, subset = NULL, weights = NULL, ...)
## S3 method for class 'IndependenceProblem':
spearman_test(object,
    alternative = c("two.sided", "less", "greater"),
    distribution = c("asympt", "approx"), ...) 

Arguments

formula a formula of the form y ~ x | block where y and x are numeric variables and block is an optional factor for stratification.
data an optional data frame containing the variables in the model formula.
subset an optional vector specifying a subset of observations to be used.
weights an optional formula of the form ~ w defining integer valued weights for the observations.
object an object of class IndependenceProblem.
alternative a character, the alternative hypothesis must be one of "two.sided" (default), "greater" or "less". You can specify just the initial letter.
distribution a character, the null distribution of the test statistic can be approximated by its asymptotic distribution (asympt) or via Monte-Carlo resampling (approx).
... further arguments to be passed to or from methods.

Details

The null hypothesis of the independence of y and x is tested.

Value

An object inheriting from class IndependenceTest-class with methods show, statistic, expectation, covariance and pvalue. The null distribution can be inspected by pperm, dperm, qperm and support methods.

Examples


spearman_test(CONT ~ INTG, data = USJudgeRatings)


[Package coin version 0.2-9 Index]