Corre/oHon 

 Coeff/c/enf 



.95 — 



.90 — 



.80 — 



.70 — 



.05 T 



.2 4- 



.3 



.4 



.£ 

 .6 



. 7 

 .S 

 .3 

 /'O 



Cn J 



9- 

 8- 

 /■ 

 6- 



4- 

 3" 



2- 



.55 -L 



Figure 3, — ^Alignment chart shovfing the ratio of check scale sample size 

 to first saraple size (^) , for various ratios of check scaling 

 costs to tree measuring costs (^) and for various correla- 

 tion coefficients. 



-23- 



