Gillet1993 {ANOFA}

Gillet1993

Description

The data, taken from M. (1993), is a dataset examining the distribution of apple tree to produce new branches from grafts. The study has a sample of 713 trees subdivided into three factors: species (2 levels: Jonagold or Cox); location (3 levels: Order1, Order2, Order3); is where the graft has been implanted (order 1 is right on the trunk); and florished (2 levels: yes or no) indicates if the branch bear flowers. It is therefore a 2 × 3 × 2 design with 12 cells.

Usage

Gillet1993

Format

An object of class list.

References

M. G (1993). Contribution à la modélisation de la croissance et du développement du pommier. Faculté des Sciences agronomiques, Gembloux.

Examples

# The Gillet1993 presents data from appletrees having grafts.
Gillet1993

# run the base analysis
w <- anofa( Freq ~ species * location * florished, Gillet1993)

# display a plot of the results
anofaPlot(w)

# show the anofa table where we see the 3-way interaction
summary(w)

# This returns the expected marginal frequencies analysis
e <- emFrequencies(w, Freq ~ species * location | florished )
summary(e)

# as seen, all the two-way interactions are significant. Decompose one more degree:
f <- emFrequencies(w, Freq ~ species | florished * location )
summary(f)