ON THE EFFECT OF A DIFFERENTIAL FERTILITY ON DEGENERACY

KARL PEARSON
1910 Biometrika  
Here by-a proper choice of <r, and k, we can make the distribution of fertility fall or rise with the character (Le. h positive or negative and both le and <r, very large,-k so taken that the centre of fertility lies outside the region of the range of values of x), or concentrate the fertility on any grade of the character (Le. make at Yale University on May 18, 2015 http://biomet.oxfordjournals.org/ Downloaded from at Yale University on May 18, 2015 http://biomet.oxfordjournals.org/ Downloaded
more » ... als.org/ Downloaded from V at Yale University on May 18, 2015 http://biomet.oxfordjournals.org/ Downloaded from * Fertility might be meunred by nett or groea family when complete, or for marriages of 15 or 90 yean* duration. It would, I tfriTiV, be possible to measure fecundity by some function of the intervals between the births of the first three or four children.
doi:10.1093/biomet/7.3.258 fatcat:pixa6r3fcjberncrk6toggmwne