Sec. 4.2 



THE NORMAL FREQUENCY DISTRIBUTION 



87 



12 3 4 5 



Number of heads (r) 



Figure 4.21^4. The binomial frequency distribution with p = 1/2 and n = 5. 



20 



18 



16 



14 



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CD 



£ 8 

 6 

 4 

 2 

 



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 

 Number of heads (r) 



Figure 4.21.B. The binomial frequency distribution with p = 1/2 and n = 20. 



36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 



Number of heads (r) 

 Figure 4.21C. The binomial frequency distribution for p = 1/2 and n = 100. 



