[R] GLM output problem

[peter dalgaard]

>> And use the parameters returned by GLM to contruct an equation for the
>> regression model:
>> 
>> model.eq = -0.446078 + 0.267673*x - 0.014577*I(x^2)
> 
> ## Not what I got with your data. I got:
> 
> Coefficients:
> (Intercept)            x       I(x^2)
>   -18.5750       5.0403      -0.2845
> 
> 
> I suspect you had some other x,y variables lying around when you
> defined your model.


More likely, the family= specification got lost and gaussian family implied:

> glm(model)

Call:  glm(formula = model)

Coefficients:
(Intercept)            x       I(x^2)  
   -0.44608      0.26767     -0.01458  

-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com