SEMAINE D'ETUDE SUR LE ROLE DE L ANALYSE ECONOMETRIOUE ETC. 
557 
it can therefore be deduced that 
Re = (1 - 4.56 x 0.0085, 
1C dt=¢C=0.017 x IIG” 
Ad =121.8-20.4- 107 
263.1 + 20.. 
C 
—U.Uxs +3 
<0 
or 
For the U.S.A. in 1956, relation 533-5, above 
P¥*=Rc+I=R, +9 +:C 
can finally be written 
oO “ 
* 
wy 
(') This figure differs greatly from the 34.4 given in the « Economic 
Almanac », 1962, p. 12, which related however only to private investment. 
On the assumption that the relative values of amortisation of consumer 
durables and government investment are the same the 34.4 becomes 
34.4 -- — zg 
1109.7 — 210.7 
1199.7 
The 319.7 is derived as the total of 163.4 (consumer durables) and 156.3 
public investment). The difference between the two figures 101.4 and 46.9 
s a reflection of the inadequacy of the usual methods of estimating amorti- 
sation. Whatever calculating process is adopted. it should respect the 
dentity 
on which I have based the calculation 
4llais - pag. 14