oneillmathews function

Test for homogeneity of variances of ONeill and Mathews (CRD)

oneillmathews Performs the test for homogeneity of variances of ONeill and Mathews (2000).

oneillmathews(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.

Returns

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

Examples

data(ex1)
attach(ex1)
crd(trat, ig, quali = FALSE, hvar = "oneillmathews",
sigF = 0.05)

References

O'NEILL, M. E.; MATHEWS, K. L. A weighted least squares approach to levene test of homogeneity of variance. Australian e New Zealand Journal Statistical, 42(1):81-100, 2000.

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, layard, levene, samiuddin.

Author(s)

Eric B Ferreira, eric.ferreira@unifal-mg.edu.br

@author Denismar Alves Nogueira @author Marcos Costa de Paula @author Mateus Pimenta Siqueira Lima