3-3 - M arch 3 2011 Thursday Regression yi= 0 1xi i i ~ N 0...

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March 3, 2011 Thursday Regression = + + yi β0 β1xi εi ~ ( , ) εi N 0 σ2 Assumptions: 1. Normal distribution 2. Constant Variance 3. Independence 4. Correct Form Fit X by Y / Fit polynomial / 2, quadratic First thing you should do after fitting, Polynomial fit / plot a residual If there is no constant variance , then it will be megaphone shape or pattern
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3-3 - M arch 3 2011 Thursday Regression yi= 0 1xi i i ~ N 0...

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