Proportions of female children at various ages during adolescence who have reached menarche.
This data frame contains the following columns:
Average age of the group. (The groups are reasonably age homogeneous.)
Total number of children in the group.
Number who have reached menarche.
Milicer, H. and Szczotka, F. (1966) Age at Menarche in Warsaw girls in 1965. Human Biology 38, 199–203.
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.
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.