412 



Plant-Breeding 



In the accompanying table the constants for the number of 

 pods borne on these plants are likewise determined by the short 

 method. Note that the column (V-G) 2 is entirely omitted, a 

 short cut which is another considerable time saver. Instead, 

 the elements of column /(F-G) are simply multiplied by the cor- 

 responding elements of the (F-G) column since f(V-G) times 

 (V-G) equals /(F-G) 2 . 



NUMBER OF PODS (SHORT METHOD) 



6400 



14000 







11500 



16000 



10800 



8000 



7500 



74200 



= 38.36 % 



- 3.5344 = 12.0360 .2568 (pods). 

 , = .3836 = 38.36 .93 %. 



9 ol.OO 



EXERCISE 3 



Correlation 



Certain characters in organisms tend to appear together 

 and the inference is that they are causally connected, that is, 



(7 = 



