R: Bootstrap version of the heteroscedastic one-way ANOVA for...

t1waybt {WRS2} | R Documentation

## 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)

[Package WRS2 version 0.9-2 Index]