“A 2 x 2 factorial experiment comparing 2 types of seed and 2 root extracts. There are 5 or 6 replicates in each of the 4 treatment groups, and each replicate comprises a number of seeds varying between 4 and 81. The response variable is the proportion of seeds germinating in each replicate.” (Crowder, 1978, Table 3).

1 |

A data frame with 21 observations on the following 4 variables.

- seed
a factor with 2 levels:

`O73`

and`O75`

.- root
a factor with 2 levels

`BEAN`

and`CUCUMBER`

.- n
a numeric vector: the number of seeds exposed to germination.

- y
a numeric vector: the number of seeds which actually germinated.

Crowder, M.J., 1978. *Beta-binomial anova for proportions*. Appl. Statist. 27, 34-37.

Questions? Problems? Suggestions? Tweet to @rdrrHQ or email at ian@mutexlabs.com.

All documentation is copyright its authors; we didn't write any of that.