Am 24.04.2010 12:41, schrieb meik michalke:
>
> could someone with an installed eRm package please send me his/her output of
> the following?
>
> data(rsmdat)
> rsm.res<- RSM(rsmdat)
> Waldtest(rsm.res)
>
> (please include R version, eRm version, OS and, for what it's worth, CPU
> architecture)
>
Here is what I get with R 2.9.0, eRm 0.12-0, Slackware 13.0 (x86_64):
Warnung in Waldtest.Rm(rsm.res) :
The following items were excluded due to inappropriate response patterns
within subgroups:
I2 I3 I4 I5
Subgroup models are estimated without these items!
Wald test on item level (z-values):
z-statistic p-value
beta I1.c1 0.388 0.698
beta I1.c2 NaN NaN
beta I1.c3 NaN NaN
beta I6.c1 -0.388 0.698
beta I6.c2 NaN NaN
beta I6.c3 NaN NaN
Warning messages:
1: In sqrt(diag(solve(parest$hessian))) : NaNs wurden erzeugt
2: In sqrt(diag(lres$W %*% solve(parest$hessian) %*% t(lres$W))) :
NaNs wurden erzeugt
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