Silberhorn, Nadja; Boztuğ, Yasemin; Hildebrandt, Lutz - Sonderforschungsbereich Ökonomisches Risiko <Berlin>
and
Probit Models. Tech. rep., Universidad de Chile
SAS (2004) SAS/ETS 9.1 User’s Guide. SAS Institute Inc., Cary/NC, USA …), and the new inverse value (IV ⁄m) is
7
compared with the old inverse value (IVm).
IV ⁄m = ln
X
j2Cm
exp ¡Vjjm + a¢
= ln
X …
j2Cm
¡exp(V
jjm) exp(a)
¢
= ln
ˆ
exp(a)
X
j2Cm
exp(Vjjm)
!
= ln (exp(a)) + ln
ˆX
j2Cm
exp(Vjjm)
!
= a + ln
ˆX
j2Cm
exp …