-54- 



FORMULA FOR EFFECTIVE DEGREES OF FREEDOM 



DF 



eff 



i=l "i"^ 



where g . 



^i ^^i-\^ 



L N. (N.-n^) ^^y 

 LV n, / ^1 



1=1 



n^-1 



L S^ _ (N,-n,) n2 Y 

 1=1 "l ^1 J 



1=1 



n^-1 



