BHOODIXKSS AND !'K( IN DI r> IN lOWI. 



81 



. ;. C'orrelofion lietzceen the Presence of lirnodiufxn diid Aimititl I'lodiirlion 

 iihofe (he Menu of Broodies and Xnn-hroodies Ct)>til>lned~ I'lillel )'e(ir (Un- 

 improved Flock 1976). 



Coefficient of correlation 



.0837 ± .034.7 



The correlation coefficient is negative and less tlian tiirec times its proljaijle 

 error. The conclusion seems to be warranted that in tlie 1916 flock there is 

 no significant correlation between broodiness and annual production. 



35. Correlation Between the Presence of Broodiness and Annual Production 

 above the Mean of Broodies and Non-broodies Combined — Pullet Year (Im- 

 proved Flock 1923). 



Niunber lielow population mean 



69 



129 



Totals 



136 



293 



Coefficient of correlation — .1339 =t .0320 



This coefficient is about four times its probable error and is prol)al)ly of 

 some significance. The degree of correlation between broodiness and annua! 

 production is slight on the two years studied; a fact that probably indicates 

 more correlation on the intervening years. 



