Description

This example is taken from Table 3 of Crowder (1978), and concerns the proportion of seeds that germinated on each of 21 plates arranged according to a 2 by 2 factorial layout by seed and type of root extract.

Format

A data frame with 21 observations (denoting plates) on the following 4 variables.

r

the number of germinated seeds.

n

the number of total seeds.

x1

seed type.

x2

root type.

Author(s)

Dimitris Rizopoulos d.rizopoulos@erasmusmc.nl

Source

Crowder, M. (1978) Beta-Binomial ANOVA for proportions. Applied Statistics, 35, 34–37.

Examples