— SECOND APPROXIMATION 
--- FIRST APPROXIMATION 
©0O SIMULATION : STANDARD DEVIATION OF INPUT = 1.000 ; OF OUTPUT = 1.376 
0.5 
0.4 
° 
u 
DENSITY , p{z) 
o 
b 
0.1 
0 
be 2 4 
MAXIMA , z , (STANDARD DEVIATIONS) 
— SECOND APPROXIMATION 
--- FIRST APPROXIMATION 
©©O SIMULATION : STANDARD DEVIATION OF INPUT = 1.000 ; OF OUTPUT = 1.376 
0.8 7 
0.7 
0.6 
05 
= 
eS 
a 
* 0.4 
E 
2 
03 
[= 
"ZB SEA, 
MONIMA , z , (STANDARD DEVIATIONS) 
Fig. 12.17. Comparison of densities of response maxima and minima 
estimated from the simulations, with those of the 
first and second approximations. 
(From Daizell.5®) 
376 
