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Delete 2nd sentence "Simple linear regression is a form of multiple regression". Not useful, esp as multiple regression redirects to linear regression which was in 1st sentence |
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: <math> \hat{b} = \frac {(1 - 3)((-1) - 2) + (2 - 3)(4 - 2) + (6 - 3)(3 - 2)} {(1 - 3)^2 + (2 - 3)^2 + (6 - 3)^2 } = 7/14 = 0.5. </math>
The standard error of the coefficient is 0.866. A 95% [[confidence interval]] is given by
: [0.5 − 0.866 × 12.7062, 0.5 + 0.866 × 12.7062] = [−10.504, 11.504].
== Mathematical derivation of the least squares estimates ==
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