anscombetukey function

Test for homogeneity of variances of Anscombe and Tukey

anscombetukey Performs the test for homogeneity of variances of Anscombe and Tukey (1963).

anscombetukey(
  resp,
  Trat,
  Bloco,
  glres,
  msres,
  sstrat,
  ssbloco,
  residuals,
  fitted.values
)

Arguments

• resp: Numeric or complex vector containing the response variable.
• Trat: Numeric or complex vector containing the treatments.
• Bloco: Numeric or complex vector containing the blocks.
• glres: Residual degrees of freedom.
• msres: Residual Mean Square.
• sstrat: Residual Sum of Squares.
• ssbloco: Sum of Squares for blocks.
• residuals: Numeric or complex vector containing the residuals.
• fitted.values: Numeric or complex vector containing the fitted values.

Returns

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

Examples

data(ex2)
attach(ex2)
rbd(trat, provador, aparencia, quali = TRUE, mcomp = "tukey",
hvar='anscombetukey', sigT = 0.05, sigF = 0.05)

References

ANSCOMBE, F. J.; TUKEY, J. W. The examination and analysis of residuals. Technometrics, 5:141-160, 1963.

RIBEIRO, R. Proposta e comparacao do desempenho de testes para homogeneidade de variancia de modelos de classificacao one-way e two-way. Iniciacao Cientifica. (Iniciacao Cientifica) - Universidade Federal de Alfenas. 2012.

See Also

han, oneillmathews.

Author(s)

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

Denismar Alves Nogueira

Marcos Costa de Paula

Mateus Pimenta Siqueira Lima