WRS2 (version 0.2-0)

t1way: A heteroscedastic one-way ANOVA for trimmed means.

Description

This function computes a one-way ANOVA for the medians. Homoscedasticity assumption not required. It uses a generalization of Welch's method.

Usage

t1way(formula, data, tr = 0.2)

Arguments

formula

an object of class formula.

data

an optional data frame for the input data.

tr

trim level for the mean.

Value

• Returns an object of class t1way containing:
• test
  value of the test statistic (F-statistic)
• df1
  degrees of freedom
• df2
  degrees of freedom
• p.value
  p-value
• call
  function call

References

Wilcox, R. (2012). Introduction to Robust Estimation and Hypothesis Testing (3rd ed.). Elsevier.

See Also

med1way,t1waybt

Examples

t1way(libido ~ dose, data = viagra)