[Limdep Nlogit List] Nlogit ;pds

[Mahsa Taslimi]

Hi

I am estimating RPL, LC, and LC-RPL models. I have a question about the
observation and sample size.
h have 2352 observations which are 784 in Nlogit. and the RpL got ; PDS for
the fixed variable or the grouping.
the estimation says I have 784 observations and the RPL or LC models got 98
groups and 2= pds. actually the WTP wil be 392 rows. what is this 392? is
it the observations? or what?

How does it work? i am learning it by myself. can anyone help me with this?

Thanks
Mahsa