References
- Ayala , F. J. and Falk , C. T. 1971 . Sex of children and family size . J. Hered. , 62 : 57 – 59 .
- Campbell , A. A. 1973 . Three generations of parents . Fam. Plan. Persp. , 5 : 106 – 112 .
- Fleiss , J. L. 1973 . Statistical methods for rates and proportions , New York : John Wiley and Sons .
- Gray , E. 1972 . Influence of sex of first two children on family size . J. Hered. , 63 : 91 – 92 .
- Gray , E. and Morrison , N. M. 1974 . Influence of combinations of sexes of children on family size . J. Hered. , 65 : 169 – 174 .
- Jaspen , N. 1965 . The calculation of probabilities corresponding to values of Z, t, F, χ2 . Educ. Psych. Meas. , 25 : 877 – 880 .
- Li , C. C. 1955 . Human genetics: Principles and methods , New York : McGraw‐Hill .
- Loyd , R. C. and Gray , E. 1969 . A statistical study of the human sex ratio . J. Hered. , 60 : 329 – 331 .
- Rao , B. R. , Mazumdar , S. , Waller , J. H. and Li , C. C. 1973 . Correlation between the numbers of two types of children in a family . Biometrics , 29 : 271 – 279 .
- Rainwater , L. 1965 . Family design , Chicago : Aldine .
- Reed , E. W. and Reed , S. C. 1965 . Mental retardation: A family study , Philadelphia : Saunders .
- Sokal , R. R. and Rohlf , F. J. 1969 . Biometry , San Francisco : Freeman .
- Thomas , M. H. 1951 . Sex pattern and size of family . Brit. Med. J. , 1 : 733 – 734 .
- Waller , J. H. 1971 . Differential reproduction: Its relation to IQ test score, education, and occupation . Soc. Biol. , 18 : 122 – 136 .
- Waller , J. H. , Rao , B. R. and Li , C. C. 1973 . Heterogeneity of childless families . Soc. Biol. , 20 : 133 – 138 .