FactoMineR (version 2.9)

AovSum: Analysis of variance with the contrasts sum (the sum of the coefficients is 0)

Description

Analysis of variance with the contrasts sum (the sum of the coefficients is 0)
Test for all the coefficients
Handle missing values

Usage

AovSum(formula, data, na.action = na.omit, ...)

Value

Retourne des objets

Ftest

a table with the F-tests

Ttest

a table with the t-tests

Arguments

formula

the formula for the model 'y~x1+x2+x1:x2'

data

a data-frame

na.action

(where relevant) information returned by model.frame on the special handling of NAs.

...

other arguments, cf the function lm

Author

Francois Husson

See Also

aov, lm

Examples

## Example two-way anova
data(senso)
res <- AovSum(Score~ Product + Day , data=senso)
res

## Example two-way anova with interaction
data(senso)
res2 <- AovSum(Score~ Product + Day + Product : Day, data=senso)
res2

## Example ancova
data(footsize)
res3 <- AovSum(footsize ~ size + sex + size : sex, data=footsize)
res3