agricolae (version 1.2-6)

waerden.test: 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

Value

y

Numeric

trt

factor

alpha

Numeric

group

Logic

main

text

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).

References

Practical Nonparametrics Statistics. W.J. Conover, 1999

See Also

kruskal

Examples

# NOT RUN {
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))
# }