R: Multiple comparisons. The van der Waerden (Normal Scores)

waerden.test {agricolae} | R Documentation

## Multiple comparisons. The van der Waerden (Normal Scores)

### Description

A nonparametric test for several independent samples.

### Usage

    waerden.test(y, trt, alpha=0.05, group=TRUE, main=NULL,console=FALSE)

### Arguments

`y` | Variable response
`trt` | Treatments
`alpha` | Significant level
`group` | TRUE or FALSE
`main` | Title
`console` | logical, print output

### Details

The data consist of k samples of posibly unequal sample size.
The post hoc test is using the criterium Fisher's least
significant difference (LSD).

### Value

`y` | Numeric
`trt` | factor
`alpha` | Numeric
`group` | Logic
`main` | text

### Author(s)

Felipe de Mendiburu

### References

Practical Nonparametrics Statistics. W.J. Conover, 1999

### See Also

`kruskal`

### Examples

    library(agricolae)
    # example 1
    data(corn)
    comparison<-with(corn,waerden.test(observation,method,group=TRUE))
    comparison<-with(corn,waerden.test(observation,method,group=FALSE))
    # example 2
    data(sweetpotato)
    comparison<-with(sweetpotato,waerden.test(yield,virus,alpha=0.01,group=TRUE))

[Package agricolae version 1.2-6 Index]