Al. a. TCIIOITPROFF 
201 
In a similar way, the other formulae deduced above maybe obtained (Chapter I, 
§ 11). 
(2) Noting that 
we find : 
= E\i ip/ - pjr +1 1 {p\ - pj,) ip'j, - po ^2 
j=i L-'-^ J ii = i .i:^./, ■'' 
7, = l :/■>+./< 
.(23). 
Similarly we find : 
E(m'^^ - nirj {lli'r, - Dir.,) (yiu\^ - Vl^J 
'•31 
N-2 
+ b'h^+n - '"ri ''I'rJ [>"r,+rs - '"r^ '"/•all 
_1_ r _r 
and hence, or directly from the formulae of § I : 
E (nij.' — mj.y = [m.,r — 111/] 
.(25), 
E {nij.' — m^y 
;-(26). 
3(iV-2) 1 
Biometrika xii 
14 
