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8 Cards in this Set
- Front
- Back
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What is RSS? |
residual sum of squares (sum of square difference between predicted and actual) |
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What is TSS? |
total sum of squares (sum of square difference between predicted and mean) |
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What is R^2 ? |
1 - RSS/TSS |
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null hypothesis |
β1 = 0 |
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Can we interpret Linear Regression? |
Only if predictors are uncorrelated |
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Define Std Error, t-statistic, p-value |
<To be filled> |
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What is forward selection? |
- Begin with the null model (only intercept) - Add the variable that results in the lowest RSS - Continue till some stopping criterion |
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What is backward selection? |
- Begin with all variables in the model - Remove the variable with the largest p-value - Continue until a stopping rule is reached |
