532 



PROCEEDINGS OP SECTION G. 



For determining the most probable values of a and y from these 

 five equations the method of least squares gives — 



5a + lOy = S«, 



and 10a + 30y =r llixtj. ; 



or y = j\{^xt^ - 22«,}, 



and 



a = ^{3S«,— Sa;«,}. 



Since S<^ = • 01160 and I,xt^ = -01829 these results give- 

 y = ~ • 00049 

 and o = • 0033U. 



Hence, combining the results we have — 

 Table X. 



The closeness of the adjusted to the crude results indicates 

 that the Makeham-Gorapertz f rmnla adof)ted represents well the 

 progression of mortality during the early years. 



8. Values of Constants Involved in Expression for I.,. 



The values of a, /3 and y in terms of s, h, g, and c, given in 

 Section 6, enable the values of s, h, and g to be readily computed. 



Thus ]osh=—Z = - 000245, 

 ^ 2 



and 



and 



and 



003545 - 1 • 996455, 



04580, 



