Table 10 . --Chi-square test across diameter classes for best mortality equation for yellow pine 



Diameter 

 class 



Number of trees 

 in class 



Actual 

 mortality 



Predicted 

 mortality 



Chi-square 

 value 



4-11 



83 



2 



1.97 



0.0 



12 - 13 



129 



3 



2.71 







14 - 15 



145 



3 



2.79 







16 - 17 



229 



S 



4.17 



.2 



18 - 19 



325 



5 



5.42 







20 - 21 



469 



4 



7.32 



1.5 



22 - 23 



585 



6 



8.93 



1.0 



24 - 25 



630 



15 



9.56 



3.1 



26 - 27 



557 



4 



8.68 



2.5 



28 - 29 



533 



13 



9. 14 



1.6 



30 - 31 



370 



6 



6.83 



. 1 



32 - 33 



260 



10 



5.73 



3.2 



34 - 35 



154 



3 



3.84 



.2 



36 - 37 



105 



2 



3.03 



.4 



38 - 39 



47 



2 



1.59 



.1 



40+ 



30 







1.25 



Chi-square statistic 



1.3 



= 15. 1 



Table 11 . --Chi-square test across 

 blackjack pine using basal . 



diameter classes for 

 area growth equation 



best mortality equation for uneven-aged 

 for even- and uneven-aged blackjack pine 



Diameter 

 class 



Number of trees 

 in class 



Actual 

 mortality 



Predicted 

 mortality 



Chi-square 

 value 



4 



4,416 



11 



19.11 



3.4 



5 



4,066 



.18 



17.37 







6 



3,322 



18 



14.11 , 



1 . 1 



7 



2,629 



17 



11.33 



2.8 



8 



2,021 



8 



8.81 



. 1 



9 



1,551 



7 



6.82 







10 



1,203 



5 



5.39 







11 



1 ,004 



6 



4.50 



.5 



12 



893 



3 



4.01 



.3 



13 



737 



2 



3.32 



.5 



14 



686 



1 



3.19 



1.5 



15 



666 



6 



3.19 



2.5 



16 



685 



4 



3.36 



.1 



17 



649 



2 



3.17 



.4 



18 



610 



1 



3.06 



1.4 



19 



473 







2.33 



2.3 



20 - 21 



908 



6 



4.83 



.3 



22 - 23 



622 



9 



3.41 



9.2 



24 - 25 



353 



1 



1.95 



.5 



26+ 



261 







1 .94 



1.9 









Chi-square statistic = 28.9 



14 



