186 



ELMER ROBERTS 



TABLE 2—Conduded 



OENEBATION 



Fx4 



Fi6 



21.43 ±0.50 

 18.64 ±0.33 



16.42 ±0.30 

 16.92 ±0.17 



16.92 ±0.20 

 16.53 ±0.18 



STANDARD 

 DEVIATION 



5.42 ±0.35 

 4.39 ±0.23 



2.16 ±0.21 

 1.51 ±0.12 



2.63 ±0.14 

 2.48 ±0.13 



COEFFICIENT OF 

 VARIABIUTT 



25.29 ± 1.74 

 23.55 ± 1.32 



13.15 ± 1.30 

 8.92 ±0.70 



15.54 ±0.85 

 15.00 ±0.80 



