Mathematics Homework Help
Mathematics Homework Help. I need the sas code
- Dataset “EX0812.txt” is posted in folder “datasets”.
- Use SAS, fit a model relating change in refractive error to baseline refractive error and baseline curvature.
- Examine the plot of the residuals versus the predicted values. Are any regression assumption violations apparent? If so, suggest possible remedies.
- Determine residuals and leverage values. Do any observations seem bothersome? Explain. (Hint: Myopic patients have negative refractive errors).
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