Age
| Average age of the group. (The groups are reasonably age homogeneous.) |
Total
| Total number of children in the group. |
Menarche
| Number who have reached menarche. |
The data are also given in Aranda-Ordaz, F.J. (1981) On two families of transformations to additivity for binary response data. Biometrika, 68, 357-363.
mprob <- glm(cbind(Menarche, Total - Menarche) ~ Age, binomial(link = probit), menarche)