fkk.test: k-Sample version of the Fligner-Kileen test for homogeneous...

In npsm: Package for Nonparametric Statistical Methods using R

Description

Returns the Fligner-Kileen test for homogeneous scales for k-samples. Also estimates of ratio of scales based on the logs of folded median-aligned samples and a corresponding confidence interval is computed. The first level (sample) is referenced. See the discussion in Section 5.7 of Kloke and McKean (2014).

Usage

fkk.test(y,ind,conf.level = 0.95)

Arguments

y	vector of responses
ind	vector of corresponding levels
conf.level	confidence coefficient for the returned confidence intervals

Details

Returns the Fligner-Kileen test for the k-sample scale problem.

Value

statistic	chi-squared test statistic
p.value	p-value of the test
estimate	vector of estimates of ratio of scales
conf.int	table of confidence intervals
cwts	vector of weights based on the estimates difference in scales

Author(s)

John Kloke [e-mail], Joseph McKean

References

Kloke, J. and McKean, J.W. (2014), Nonparametric statistcal methods using R, Boca Raton, FL: Chapman-Hall.

Hettmansperger, T.P. and McKean J.W. (2011), Robust Nonparametric Statistical Methods, 2nd ed., New York: Chapman-Hall.

See Also

fk.test

Examples

y1 <- rnorm(10)
y2 <- rnorm(12)*3
y3 <- rnorm(15)*5
y<-c(y1,y2,y3)
ind<-rep(1:3,times=c(10,12,15))
fkk.test(y,ind)

npsm documentation built on May 29, 2017, 12:12 p.m.