Table 30 . --Chi-square test across diameter classes for best even- and uneven-aged blackjack 

 pine mortality equation (using basal area growth equation for uneven-aged black- 

 jack pine only) compared to uneven-aged data only 



Diameter Number of trees Actual Predicted Chi-square 

 class in class mortality mortality value 



4 



4,416 



11 



44.93 



25.6 



5 



4,066 



18 



35.80 



8.9 



6 



3,322 



18 



24.81 



1.9 



7 



2.629 



17 



17.74 







8 



2,021 



8 



1 1 . 55 



1 . 1 



9 



1 ,551 



7 



7 . 92 



0. 1 



10 



1 , 203 



5 



5 . 65 



. 1 



1 1 



1,004 



5 



4 . 29 



. 7 



12 



893 



3 



3 .62 



. 1 



13 



737 



2 



2.82 



.2 



14 



686 



1 



2 . 61 



1 . 



15 



666 



6 



2.71 



4.0 



16 



685 



4 



2.75 



.6 



17 



649 



2 



2.63 



.2 



18 



610 



1 



2.49 



.9 



19 



473 







2.05 



2.1 



- 21 



908 



6 



4.15 



.8 



- 23 



622 



9 



3.03 



11.8 



- 25 



353 



1 



2.04 



.5 





261 







2.34 



2.3 



Chi-square - 62.8 



74 



