298 



HARRIS, KIRKPATRICK, BLAKESLEE, WARNER AND CARD 



The average errors without regard to sign, given in table 9 need not be 

 considered in detail. They range from 21.4 to 25.9 eggs per year or from 

 13.6 to 16.5 percent of the annual total. 



TABLE 9 



Average deviation without regard to sign of predicted annual egg record from aclual record. Pre 

 diction of annual production from one- and from three-months performance. Equations based 

 on Storrs experience, 1911 to 1917. Test of equations on 415 While Leghorns, Starrs, 1917-1918. 



The square root of mean square deviation of errors of prediction giver 

 in table 10 are, of course, larger than the average deviations without regarc 

 to sign. They vary from 28.1 to 33.8 eggs or from 17.8 to 21.5 percent o: 

 the annual production. 



