94 



BIOMETRY 



difference in the relative number of heads and tails 

 than 560 : 439 becomes very small indeed. Although 



Tails 1 



456 



FIG. 6. 



10 



a throw of all heads or all tails is possible, the odds 

 against such a result being ever actually seen are 



490 bOO SUl 



FIG. 7. 



almost inconceivably great. In Fig. 7 the middle 

 values for (i-f i) 999 are plotted those combinations 



