PREDICTING EGG PRODUCTION IN WHITE LEGHORNS 



291 



e very small. Two are less than 1 egg, 4 are less than 2 eggs, while 5 

 e from 2 to 7 eggs. The percentage errors based on the mean annual 

 eduction are less than 1 percent in 5 of the cases and less than 5 percent 



160 

 140- 

 120 - 



100 

 80 - 



2 4- 6 8 10 12 14 16 18 20 22 24 2S 28 30 32 34 3S 39 40 42 44 46 48 



DIAGRAM 5. Tests of prediction of annual production from combined record of two consecu- 

 l e months. For explanation see text. Tests for November to February. 



i the other 6 cases. The average error in actual number of eggs, dis- 

 igarding the sign of the error, is 2.72 eggs while the average of percentage 

 &amp;lt;rorsis 1.72 percent. 



It seems unnecessary to discuss in detail the average deviations without 

 :gard to sign, of the predicted from the observed annual egg production. 



( NETics6: My 1921 



