The formula for a line
Cast your mind back to algebra days. You might remember the formula for a line being \(y=mx + b\). We’re going to be working with that basic concept, except moving around some of the variables and renaming them.
\[ y = \text{intercept} + (\text{slope}\times x) \]
\[ y = b_0 + bx \]
Plan
Review lines and their geometry
Lines as models
Residuals
Sum of Squared Residuals
\(r^2\)
Reuse
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