so
j I I I I I I I I [—
Il ¢.2 OJ 0.6 0.8
CtinuhliH Probabilily
□ Scout + Control O Peoncap M
Figure 2. Cumulative Probabilty Functions for Yield, All Regions
for damage in 1989. A reason that Penncap M
entered the efficient set for profit in the separate
years and did not entered when the years are com-
bined is the low minimum level of profits in 1988 for
Scout and Karate, $-91.75 and $-87.82, respectively,
compared to Penncap M, $-81.12. This prevents
both Scout and Karate from dominating Penncap M
in terms of SSD analysis; however, in 1988 both
insecticides dominate Penncap M under EV analy-
sis.1 In 1989, of the three insecticides, Scout,
1A necessary condition for one distribution to SSD dominate another is that the smallest value of a dominant distribution cannot
be less than the smallest value of a dominated distribution.
91