Table 29 . --Chi-sguare test across diameter classes for best even- and uneven-aged blackjack 

 pine mortality equation (using basal area growth equation for even- and uneven- 

 aged blackjack pine) compared to uneven-aged data only 



Diameter 

 class 



Number of trees 

 in class 



Actual 

 mortal itv 



Predicted 

 mortalitv 



Chi-square 

 value 



4 



5 



6 



7 



8 



9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 - 21 

 22 - 23 

 24 - 25 

 26+ 



4,416 

 4,066 

 3 ,322 

 2,629 

 2,021 

 1,551 

 1,20S 

 1,004 

 893 

 737 

 686 

 666 

 685 

 649 

 610 

 473 

 908 

 622 

 353 

 261 



11 

 18 

 18 

 17 

 8 

 7 

 5 

 6 

 3 

 2 

 1 

 6 

 4 

 2 

 1 

 

 6 

 9 

 1 

 



45.57 

 35.90 

 24.72 

 17.62 

 11.44 

 7.84 

 5.58 

 4.22 

 3.54 

 2.75 

 2.53 

 2.61 

 2.63 

 2.52 

 2.38 

 1.96 

 4.07 

 3.06 

 2. 13 

 2.50 



26.2 

 8.9 

 1.8 

 



1.0 



0.1 

 .1 

 .7 

 .1 

 .2 

 .9 



4.4 

 .7 

 .1 

 .8 



2.0 

 .9 

 11.5 

 .6 



2.5 



Chi-square = 65.7 



73 



