WRS2 (version 0.2-0)

med1way: Heteroscedastic one-way ANOVA for medians.

Description

This function computes a one-way ANOVA for the medians. Homoscedasticity assumption not required. There shouldn't be too many ties.

Usage

med1way(formula, data, alpha = 0.05, crit = NA, iter = 1000)

Arguments

formula

an object of class formula.

data

an optional data frame for the input data.

alpha

significance level.

crit

if NA an appropriate critical value is determined for the alpha value specified and a p-value is returned. If a value for crit is specified, it is used as the critical value, but no p-value is reported. Specifying a value for

iter

number of iterations.

Value

• Returns an object of class med1way containing:
• test
  value of the test statistic
• crit.val
  critical value
• p.value
  p-value
• call
  function call

References

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

See Also

t1way,t1waybt

Examples

med1way(libido ~ dose, data = viagra)