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Re: Rép. : Re: st: Interpretation of -mfx-

From   Maarten buis <>
Subject   Re: Rép. : Re: st: Interpretation of -mfx-
Date   Thu, 19 Jun 2008 23:31:09 +0100 (BST)

--- "Joao Ricardo F. Lima" <> wrote:
> mfx (marginal effects) are change in probabilities, when we are using
> logit, mlogit ...
> margeff (partial effects) are change in probabilities too?

-mfx- will give you the first derivative, that is, the slope at a
choses value of x, while -margeff- will compare two points on the curve
one unit apart around that value. So -margeff- will give a discrete
approximation of the derivative.

-- Maarten

Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands

visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434

+31 20 5986715

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