Table l.-- Form for computation of sums of squares in variance analysis 



of variances for attack and for gallery density 



Source 



Degrees of 

 freedom 





Suras 



of 



squares 





Plots 



p-1 



K 



P 



tsal 



\- 2 



/ , T 



- C 









Tree sizes 



t-1 



t 



psal 



- C 









Sample sizes 



s-1 



s 



ptal 



V" 2 

 )^PT 



- C 









PT 



(p-1) (t-1) 



Pt 

 sal 



/-^PS 



- C - 



SS 



(P) - SS 



(T) 



PS 



(t-1) (s-1) 



PS 



tal 



- C - 



SS 



(P) - SS 



(S) 



TS 



(t-1) (s-1) 



ts 

 pal 



- C - 



SS 



(T) - SS 



(S) 







^ PTS 























Error, PTS 



(p-1) (t-1) (s-1) 



pts 

 al 



- C - 



SS 



(P) - SS 



(T) - SS (S) 







^2 















PTS 











Subtotal 



pts-1 



pts 

 al 



- C 









(Continued) 



6 



