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,
    distribution = c("asymptotic", "approximate"), ...) 

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.

distribution

a character, the null distribution of the test statistic can be approximated by its asymptotic distribution (asymptotic) or via Monte-Carlo resampling (approximate). Alternatively, the functions approximate or asymptotic can be used to specify how the exact conditional distribution of the test statistic should be approximated.

...

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 1.0-20 Index]