OF ATTHir.rTKS IN STATISTICS 



295 



Association between Cross Fertilisation and Tallness of Height (CiiARLES DARWIN, 



" Cross and Self Fertilisation "). 



the amounts in all cases. In six cases of the thirty-eight the sign is negative, and 

 in three cases the association is zero. 



50. There is another interesting point of the same investigation in which the 

 method will enable us to state clearly the quantitative result and its probable 



