9 



Records ot the Indian Museum. 



[Vol XXIII 



The difference is nearly eight times the probable error of the 

 difference. Hence we conclude that Caste Variability is signi- 

 ficantly lower than the Average Variability of other homogeneous 

 samples. 



It is interesting to find that while the Anglo-Indian sample 

 is not significantly more variable than non-Caste samples, it does 

 ii to be just significantly more variable than Caste samples. 



The Anglo-Indian sample is "mixed" from a Caste stand- 

 point but is not so from the standpoint of ordinary stable popu- 

 lations. We shall see later that the Anglo-Indians are about as 

 variable as modern European samples. 



(b) Selected Indian Castes. 

 I now select samples of 25 and more from the Caste data. 



Distributions of yo Selected Caste Coefficients of Variation. 



Group 



2*2 



-2'3 



-2U 



-2-5 



-2'6 



-27 



-2-8 



-2-9 



-3-0 



-3'i 



Frequency . . 



I 



I 



O 



1 







i 



2 



7 



5 



4 



Group 



-3-2 



"3-3 



-3-4 



-3'5 



-36 



-37 



-38 



-3-9 



Total. 





Frequency . . 



1 I 



12 



6 



6 



5 



3 







5 



70 





With 'i as the grouping unit, I find 



Mean Selected Coefficient cf Variation = 3'3°43±'°278 



Standard Deviation of Coeff. of Variation = '345 8 + '0197 



Mean non-Caste Coeff. of Variation = 3'57 IO ±'°326 



Caste Difference = 016 67 ±-0429 



In this ease also the difference is nearly four times the prob- 

 able error. We conclude; that the Indian Caste samples have got a 

 substantially lower Variability than non-Caste samples. 



\\\ shall now compare Anglo-Indian Variability with the 

 • ed Caste Variability. 



Anglo-Indian Variability =4-0672 

 Selected Caste- Variability =3.3043 



Anglo-Indian Difference = 7629 



Thus 

 From Biomet ric Table II . 



■.aSa.rw 



158 



: f a)- -f)8 64 474 

 -«) = -oi 35 526 



The chance 1- only 1 ; m edoq that the Variability of an 



Indian Caste will \n it i than Anglo-Indian Variability. This 



IS tin lowest odds \w haw got Up till now. 



