Tagged Questions
1
vote
1answer
121 views
Interpretation of coefficients in a GLM
After a bidirectional step wise, I have the following generalized linear model:
Y = -8.18 + 1.18 v1 - 7.32 v2
In a simple linear model (with one explanatory ...
1
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0answers
28 views
Removing an interaction term after checking for homogeneity of regression slopes [duplicate]
Possible Duplicate:
Interpreting main effect and interaction
In a GLM, I had one categorical predictor and one covariate. To ensure the covariate was consistent across levels of my ...
0
votes
1answer
326 views
How to compare regression coefficients across three FGLS models in Stata?
I have a longitudinal dataset, so for each company different year observations. The time period of the dataset is 1993 to 2008. I tested a FGLS model on the whole dataset.
Now I want to test the FGLS ...
1
vote
1answer
40 views
Comparing different ways of specifying the same response variable
I have a question about different ways of specifying a response variable in a model and what effect this could have on my results.
In my example, I wanted to model the number of times a bird visits ...
1
vote
1answer
2k views
How to deal with an error such as “Coefficients: 14 not defined because of singularities” in R?
When doing a GLM and you get the "not defined because of singularities" error in the anova output, how does one counteract this error from happening?
Some have suggested that it is due to ...
