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Results tagged with marginal-effect
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user 56216
Marginal effects measure the change in the conditional mean of outcome $y$ when regressors change by one unit.
4
votes
1
answer
2k
views
Is it meaningful to calculate predicted marginal effects of a count data model with an inter...
In a little regression model of mine, I estimate the following formula a a negative binomial regression type (it would hold for a Poisson regression as well):
$$
y = \beta * var1 + \gamma * var1 * bi …
- 419
0
votes
1
answer
180
views
Can Marginal effects and Incidence Rate Ratios be exactly the same?
Consider a boring count data model of citations of an article in relation to its page number and the price of the journal. I prefer an ordinary negative binomial regression.
Can it be that the margina …
- 419
0
votes
Can Marginal effects and Incidence Rate Ratios be exactly the same?
The answer to this riddle is simple: $fit does not contain what I was looking for. It contains the parameters of the model that mfx() wraps.
To see this, the output of mod1 is
Call:
negbinmfx(formula …
- 419