Did you back-calculate to estimate an intercept?
Alternately, I've been working on a function that takes a fitted sem
and gets predicted values given an input. Contact me off-list and
I'll send it to you.
On Mar 22, 2010, at 8:37 AM, Tryntsje Wesselius wrote:
Hi everyone,
I just conducted a structural equation model for estimating a response
model. This model should predict the probability that someone is
responding
to a direct mailing. I used the sem package for this. When I have my
coefficients I want to know how well my model predicts the
probability of
response. How can I calculate these probabilities?
I tried to use the unstandardized coefficients, just like a regression
coefficient in the following formula:
Y = b1*x1 + b2*x2
But then I have values larger than 1, so that aren't probabilities.
Does
anyone dealt with this problem before?
You can be of great help to me!!
Kind regards,
Tryntsje
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