Goodness of fit for regressions
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How do we measure variability for the marginal distribution
- Use the SStotal
- Compute the SSerror
- Contrast with a 1 way ANOVA
How can we find the SSerror?
Square and sum the residuals
How can we find the SSregression?
This is the sum of squares of the predicted values
How would we find the R2 value for regression analysis?
SSregression divided by SStotal
What is the null hypothesis tested by regression analysis?
What is the alternate hypothesis tested by regression analysis?
- HA: b*≠0 (2 sided)
- HA: b*>0 (1 sided)
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