WRS2 (version 0.3-1)

t1waybt: Bootstrap version of the heteroscedastic one-way ANOVA for trimmed means.

Description

Test the hypothesis of equal trimmed means using a percentile t bootstrap method. Corresponding post hoc tests are provided in mcppb20.

Usage

t1waybt(formula, data, tr = 0.2, nboot = 599)
mcppb20(formula, data, tr = 0.2, nboot = 599, crit = NA)

Arguments

formula

an object of class formula.

data

an optional data frame for the input data.

tr

trim level for the mean.

nboot

number of bootstrap samples.

crit

critical significance value.

Value

• Returns an object of class t1waybt containing:
• test
  value of the test statistic
• p.value
  p-value
• Var.Explained
  explained amount of variance
• Effect.Size
  effect size
• nboot.eff
  effective number of bootstrap samples
• call
  function call
• mcppb20 returns an object of class "mcp1" containing:
• comp
  inference for all pairwise comparisons
• fnames
  names of the factor levels

References

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

See Also

t1way,med1way

Examples

t1waybt(libido ~ dose, data = viagra)

## post hoc
mcppb20(libido ~ dose, data = viagra)