299 



The range of variation in the egg production of three-month periods is 

 ) wide that it is impossible because of the limitations of space to represent 

 ie errors of prediction from three-month periods graphically for each of 

 le equations. 



TABLE 10 



juare root of mean square deviation of predicted annual egg record from actual record. Prediction 

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

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



Two series, that for November to January and for March to May, have 

 tan selected at random to represent the goodness of fit of prediction in 

 &quot; lese cases. The results for prediction from November to January record 

 ;e shown in diagram 9. Those for prediction from March to May pro- 





Nines 6: My 1921 



