siegel.tukey.test: Siegel Tukey Test

In vartest: Tests for Variance Homogeneity

Siegel Tukey Test

Description

siegel.tukey.test performs Siegel Tukey variance homogeneity test.

Usage

siegel.tukey.test(formula, data, alpha = 0.05, na.rm = TRUE, verbose = TRUE)

Arguments

formula	a formula of the form lhs ~ rhs where lhs gives the sample values and rhs the corresponding groups.
data	a tibble or data frame containing the variables in formula.
alpha	the level of significance to assess variance homogeneity. Default is set to alpha = 0.05.
na.rm	a logical value indicating whether NA values should be stripped before the computation proceeds.
verbose	a logical for printing output to R console.

Value

A list containing the following components:

statistic	the corresponding test statistic.
parameter	the parameter(s) of the approximate chi squared distribution of the test statistic.
p.value	the p-value of the test.
method	the character string "Siegel Tukey Test".
data	a data frame containing the variables in which NA values (if exist) are removed.
formula	a formula of the form lhs ~ rhs where lhs gives the sample values and rhs the corresponding groups.

Author(s)

Gozde Cosar and Osman Dag

References

Gibbons, J.D., Chakraborti, S. (2010). Nonparametric Statistical Inference. CRC Press, 5th Ed., 316-320.

Siegel, S., Tukey, J.W. (1960). A Nonparametric Sum of Ranks Procedure for Relative Spread in Unpaired Samples. Journal of the American Statistical Association, 55:291, 429-445.

See Also

GSTTest

Examples

library(vartest)

siegel.tukey.test(Sepal.Length ~ Species, data = iris)

vartest documentation built on May 29, 2024, 10:21 a.m.