82 Records of the Indian Museum. [Vol, XXIII, 



Anglo-Indian Variability =40672 

 Mean Selected (137 samples) = 3*4412 + '0219 



Anglo-Indian Difference = '6260 



Standard Deviation = • 3797 ±01 55 



•6260 

 v — = 1*62. 



3797 

 From Biometric Table II, J(i + a) = *94 73 839 



\(\ — a) = '05 26 161 



Thus over 5% will have greater Variability. The difference 

 can scarcely be called significant. 



Standard Deviations. 



I shall merely give the final results. (The complete figures 

 will be published in a supplement). 



(a) All Samples (Caste and others) total =190. 



Mean Standard Dev. = 57' o68 4±'42 7 1 mm - 



Anglo-Indian Standard Dev. =67-3850 



Anglo-Indian Difference =10*3167 

 S.D. of Standard Dev. = 87302+3020. 



10-3167 



x = 



= 1-181 



87302 



From Biometric Table II, £(1 + a)= -88 09 999. 



J(l -a)= -17 90 001. 



Thus nearly 18% will have a greater Standard Deviation 

 than the Anglo-Indian sample. 



(b) Selected Samples (Caste and others) greater than 25, toted— 134 



Mean Standard Dev. =56-7612 + -3087 mm. 



Anglo-Indian Standard Dev. =67385 



Anglo-Indian Difference =106238 

 S.D. of Standard Deviation = 68424 



106238 

 68424 DD 



From Biometric Table II. £(1 +a)= -93 94 292 



J(i-a)- -06 05 708 



Six per cent will have a greater variability than the Anglo- 

 Indians. 



(a) All Non-Caste Samples, total = 



Mean Standard Dev. =59* 2830 ±-6138 mm. 



Anglo-Indian Standard Dev. =67*385 



