Data for the Problem of Evolution in Man. 133 



It will be seen at once that the means and standard deviations 

 obtained by the two methods are very close, but that in the coefficients 

 of variation and correlation there may be a difference of some 3 per 

 cent. Sensible as this is, its amount did not seem to justify the 

 immense additional labour of index correlation tables — until at any 

 rate the biologists have shown what possible use can be made of index 

 correlations for organic relationship. 



The following results were obtained : — 



Table VI. 



Index. 



Mean value. 



Standard deviation. 



R i/R ir 

 R ii/R iv 

 R iii/R iv 



1 -2210 

 1 -2968 

 1 -2004 



-03787 

 -03954 

 -03270 



L i/L iv 

 L ii/L iv 

 L iii/L iv 



1 -2238 

 1 -3016 

 1 -2030 



-03799 

 -04001 

 -03186 



It would thus appear that the indices for the left hand are all 

 larger than for the right, or the index, middle and ring fingers 

 relatively larger with respect to the little finger in the left than the 

 right hand. On the whole the variability of the right hand still 

 appears less than that of the left, i.e., two cases against one. 



Turning to correlation, the following values were found : — 



Table VII. — Total Correlations of Indices. 



1 



Ri/Riv 

 Rii/Riv 

 R iii/R iv 



Ri/Riv. 



Rii/Riv. 



Riii/Riv. 



Li/Liv. 



Lii/Liv. 



Li ii L iv. 



Li/Liv 

 Lii/Liv 

 Liii/Liv 



1 



-7631 

 0-6632 



0-7631 

 1 



-7310 



-6632 

 -7310 

 1 



1 



-7774 

 0-6587 



-7774 

 1 



-7590 



-6587 

 -7590 

 1 



Here, but not so decisively as in the case of absolute magnitudes, 

 the left hand exhibits higher correlation. This higher correlation 

 becomes absolutely decisive, however, if we consider the spurious cor- 

 relations given below. 



Table VIII. — Spurious Correlations of Indices. 



Ri/Riv 

 Rii/Riv 

 Riii/Riv 



Ri/Riv. 



Rii/Riv. 



Riii/Riv. 



Li/Liv. 



Lii/Liv. 



L iii/L iv. 



Li/L iv 

 Lii/Liv 

 Liii/Liv 



1 



-5628 

 0-5529 



0-5628 

 1 



-5504 



0-5529 

 0-5504 

 1 



1 



0-5502 

 0-5429 



-5502 

 1 



-5473 



0-5429 

 -5473 

 1 



