[Limdep Nlogit List] Marginal effects in a random parameter model

Jaap Bos jwb_bos at yahoo.com
Fri Dec 5 02:23:16 EST 2008

Dear all,

I have estimated the following specification:


Where y1_ and y2_ are the firm specific means for y1 and y2.

Now i want to calculate the marginal effects for x1, x2 and y1 and y2 for all firms (>5000) in my data set. 

My general question is: how to go about to do this?

More specifically:

(a) Is the average marginal effect for y1, the coefficient on y1 + the scale parameter for y1 * y1_ + scale parameter for y2 * y2_ ?

(b) Do i need the "Heterogeneity in the means of random parameters" to adjust for correlations among my z's?

gr + thanks, Jaap Bos

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