SEMAINE D'ÉTUDE SUR LE ROLE DE L ANALYSE ECONOMETRIQUE ETC. 
55 
where X—[Y ©Y1 and g=}c*:c**{ The least-squares estim- 
ator, g,, of gis 
(IV. 42) 
oo (XX) N- 
Given g,, we can form a vector, w, say, of type x 
where 
IV. 43) 
Po [eg — (c] + BcT): 
and a matrix, W say, of order n, where 
(IV. 44) 
Wa = [tq — Po (cf + Bet 
Apart from a random element, w, and W, are connected 
the relationship 
TV. 45) 
Te Nu. 6 
UU 
If we now define 
(IV. 46) 
w=lw,, Ww, ..., W;} 
and 
(IV. 47 
W- 
} VV 
, W 
7 
…, W 
we can write, apart from a random element, 
‘IV. 48) 
7h 
g. 03 
S - pag. 6 
e 
1 Ston 
dy