vinod gullu wrote:
> Hi all,
> I am trying to fit full quadratic model i.e liear +
> square + interaction terms to my data (216 data
> points), so in my case coefficients are 28 (6
> parameters). When i look into summary lm() of model
> all cross terms coefficients are NA. What does this
> mean?
Hi all,
I am trying to fit full quadratic model i.e liear +
square + interaction terms to my data (216 data
points), so in my case coefficients are 28 (6
parameters). When i look into summary lm() of model
all cross terms coefficients are NA. What does this
mean? Is the regression is not able to so
