ExpDes (version 1.2.0)

layard: Test for homogeneity of variances of Layard

Description

Performs the test for homogeneity of variances of Layard for Jackknife (1973).

Usage

layard(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 the Layard test of homogeneity of variances and its practical interpretation for the significance level of 5%.

References

LAYARD, M. N. J. Robust large-sample tests for homogeneity of variances. Journal of the American Statistical Association, v.68, n.341, p.195-198, 1973.

NOGUEIRA, D, P.; PEREIRA, G, M. Desempenho de testes para homogeneidade de vari<e2>ncias em delineamentos inteiramente casualizados. Sigmae, Alfenas, v.2, n.1, p. 7-22. 2013.

See Also

See also: bartlett, samiuddin, levene, oneillmathews

Examples

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