ExpDes (version 1.2.2)

levene: Test for homogeneity of variances of Levene

Description

levene Performs the test for homogeneity of variances of Levene (1960).

Usage

levene(trat, resp, t, r)

Arguments

trat

Numeric or complex vector containing treatments.

resp

Numeric or complex vector containing the response variable.

t

Number of treatments.

r

Numeric or complex vector containing the number of replications of each treatment.

Value

Returns the p-value of Levene's test of homogeneity of variances and its practical interpretation for significance level of 5%.

References

LEVENE, H. Robust tests for equality of variances. In: Olkin, I.; Ghurye, S.G.; Hoeffding, W.; Madow, W.G.; Mann, H.B. (eds.). Contribution to Probability and Statistics. Stanford, CA: Stanford University Press, pages 278-292, 1960.

NOGUEIRA, D, P.; PEREIRA, G, M. Desempenho de testes para homogeneidade de variancias em delineamentos inteiramente casualizados. Sigmae, Alfenas, v.2, n.1, p. 7-22. 2013.

See Also

bartlett, samiuddin, layard, oneillmathews.

Examples

# NOT RUN {
data(ex1)
attach(ex1)
crd(trat, ig, quali = FALSE, hvar = "levene")
# }