Table 12 . --Chi-square test across diameter classes for best mortality equation for uneven-aged 

 blackjack pine using basal area growth equation for uneven-aged blackjack pine only 



Diameter Number of trees Actual Predicted Chi-square 



class in class mortal ity mortality value 



4 



4,416 



11 



19. 10 



3.4 



5 



4,066 



18 



17.36 







6 



3,322 



18 



14. 11 



1.1 



7 



2,629 



17 



11.32 



2.8 



8 



2,021 



8 



8.81 



.1 



9 



1,551 



7 



6.81 







10 



1,203 



5 



5. 39 







11 



1 ,004 



6 



4.50 



.5 



12 



893 



3 



4.02 



.3 



13 



737 



2 



3.32 



.5 



14 



686 



1 



3. 19 



1.5 



15 



666 



6 



3.20 



2.5 



16 



685 



4 



3. 37 



.1 



17 



649 



2 



3. 19 



.4 



18 



610 



1 



3.07 



1.4 



19 



473 







2.34 



2.3 



20 - 21 



908 



6 



4.84 



.3 



22-23 



633 



g 



3.41 



9. 2 



24 - 25 



353 



1 



1.94 



. S 



26+ 



261 







1.93 



Chi-square statistic 



1.9 

 = 28.9 



Table 15. 



--Chi-square test across diameter 

 uneven-aged blackjack pine using 

 aged blackjack pine 



classes for 

 basal area 



jbest mortality equation for 

 growth equations for even- 



■ even- and 

 and uneven- 



Diameter 

 class 



Number of trees 

 in class 



Actual 

 mortal ity 



Predicted 

 mortality 



Chi-square 

 value 



4 



5,790 



126 



83.78 



21.3 



5 



5,635 



47 



70.05 



7.6 



6 



4,681 



28 



44.95 



6.4 



7 



3,549 



22 



26.04 



.6 



8 



2,540 



8 



14.34 



2.8 



9 



1,792 



7 



8.56 



.3 



10 



1,261 



6 



5.68 







11 



1,011 



6 



4.23 



.7 



12 



893 



3 



3.54 



.1 



13 



737 



2 



2.75 



.2 



14 



686 



1 



2.53 



.9 



15 



666 



6 



2.61 



4.4 



16 



685 



4 



2.63 



.7 



17 



649 



2 



2.52 



.1 



18 



610 



1 



2.38 



.8 



19 



473 







1.96 



2.0 



20 - 21 



908 



6 



4.07 



.9 



22 - 23 



622 



9 



3.06 



11.5 



24 - 25 



353 



1 



2.13 



.6 



26+ 



261 







2.50 



2.5 



Chi-square statistic = 64.3 



15 



