PHYSICAL AND PHYSIOLOGICAL MEASUREMENTS. 



97 



The women show correlations which differ remarkably from those 

 found in the men. The original series is characterized by a correlation 

 of only r=0.19, the supplementary series by a correlation of only 

 r =0.31, and the total series by a correlation of r =0.23. 



Comparing the total available materials for adult men and women, 

 we find the following correlations and their difference : 



For 136 men r sh =0.6149 0.0360 



For 103 women r sh = 0.23 18 0.0629 



Difference 0.3831 0.0725 



The difference is over 5 times as large as its probable error and 

 certainly suggests a significant difference in the correlation between 



STATURE IN CENTIMETERS 



DIAGRAM 15. Distribution of total daily heat-productions of men of various statures. 



stature and total heat-production in men and women. Against the 

 conclusion that this is a real sexual differentiation, may be possibly 

 urged the fact (demonstrated immediately above) that in the infants 

 the correlations are of about the same magnitude, the constant for 

 girl babies being, as a matter of fact, slightly greater than that for 

 boy babies. 



