Table 2. --Variance analysis of variances for attack density per square foot ^ 



Source 



; Sunn of ; 



DePTGes of 



■ Mean square ] 



F 





; squares : 



freedom 





Plots 



10668.95 



1 



10668.95 



26.56** 



Tree sizes 



12887.36 



3 



4295.79 



10.70** 



Sample sizes 



107007.54 



5 



21401.51 



53.29** 



FT 



1776.20 



3 



592.07 



1.47 



PS 



2491.72 



5 



498.34 



1.24 



TS 



7241 .00 



15 



482.73 



1.20 



Error, PTS 



6020.75 



15 



401.38 





Subtotal 



148093.52 



47 







Aspects 



0.49 



1 



0.49 



0.00 



Levels 



2264.04 



2 



1132.02 



3.26* 



AL 



411.86 



2 



205.93 



0.59 



AP 



1530.43 



1 



1530.43 



4.41* 



AT 



2087,41 



3 



695.80 



2.00 



AS 



1066.13 



5 



213.23 



0.61 



LP 



3727.52 



2 



1863.76 



5.37* 



LT 



2949.48 



6 



491.58 



1.42 



LS 



2327.64 



10 



232.76 



0.67 



Error, PTSAL 



72296.93 



208 



347.58 





Total 236755.45 287 



^Variances computed on a 1 square foot basis. 



Table 3 . - - Variance analysis of variances for gallery density per 1/10 square foot^ 



Source 



Sum of 

 squares 



Degrees of 

 freedom 



Mean square 



Plots 



Tree sizes 



Sample sizes 



PT 



PS 



TS 



Error, PTS 



180.8485 

 8774.8823 

 5750.9965 

 4140.8553 

 84.0797 

 423.1305 

 556.8869 



1 

 3 

 5 

 3 

 5 



15 

 15 



180.8485 

 2924.9608 

 1150.1993 

 1380.2851 

 16.8159 

 28.2087 

 37.1258 



4.86* 

 78.68** 

 30.94** 

 37.13** 



0.45 



0.76 



Subtotal 



19911.6797 



47 



(Continued) 



9 



