nonadditivity: Nonadditivity model test

In agricolae: Statistical Procedures for Agricultural Research

Nonadditivity model test

Description

The resistance for the transformable nonadditivity, due to J. W. Tukey, is based on the detection of a curvilinear relation between y-est(y) and est(y). A freedom degree for the transformable nonadditivity.

Usage

nonadditivity(y, factor1, factor2, df, MSerror)

Arguments

y	Answer of the experimental unit
factor1	Firts treatment applied to each experimental unit
factor2	Second treatment applied to each experimental unit
df	Degrees of freedom of the experimental error
MSerror	Means square error of the experimental

Details

Only two factor: Block and treatment or factor 1 and factor 2.

Value

P, Q and non-additivity analysis of variance

Author(s)

Felipe de Mendiburu

References

1. Steel, R.; Torri,J; Dickey, D.(1997) Principles and Procedures of Statistics A Biometrical Approach

2. George E.P. Box; J. Stuart Hunter and William G. Hunter. Statistics for experimenters. Wile Series in probability and statistics

Examples

library(agricolae)
data(potato )
potato[,1]<-as.factor(potato[,1])
model<-lm(cutting ~ date + variety,potato)
df<-df.residual(model)
MSerror<-deviance(model)/df
analysis<-with(potato,nonadditivity(cutting, date, variety, df, MSerror))

agricolae documentation built on Oct. 23, 2023, 1:06 a.m.