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Results tagged with regression
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user 13698
Techniques for analyzing the relationship between one (or more) "dependent" variables and "independent" variables.
2
votes
0
answers
592
views
How do I model monthly count data (the number of lumbar fusion surgeries)?
If I use Poisson regression, then do I have to test for normality? Or can I just ignore the distribution of the data. A step by step procedure is requested as I am new to this field. … Since, I have count data I am using Poisson Regression to model number of surgeries. But Poisson regression has some strong assumptions. Another possible method is Negative Binomial Regression. …
- 415
10
votes
4
answers
10k
views
When to use non-parametric regression?
I am using PROC GLM in SAS to fit a regression equation of the following form
$$
Y = b_0 + b_1X_1 + b_2X_2 + b_3X_3 + b_4t
$$
The QQ plot of the resulting redsiduals indicate deviation from normality … But I do not have much knowledge in non-parametric regression. I do not know when to choose non-parametric regression over parametric regression.
Can someone help me with this? …
- 415