Question: Determine the following values:

n = 479

Σ HP = 116,553

Σ MPG = 9,346

Σ (HP2) = 32,654,855

Σ (MPG2) = 196,038

Σ (HP x MPG) = 2,109,130

If you wanted to predict the gasoline mileage of a 2006 car with 250 horsepower, what equation would you use?  (x = HP and y = MPG)

[A] What would be your prediction?

[A] What does b1, the slope, represent?

[C] Where is the centroid?

[D] What does b0, the y-intercept, represent?

[E] Prove that the regression line passes through the centroid.