AovSum function

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

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

Test for all the coefficients

Handle missing values

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

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

Returns

Retourne des objets - Ftest: a table with the F-tests

• Ttest: a table with the t-tests

Author(s)

Francois Husson francois.husson@institut-agro.fr

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