Linear Regression Models

AP Statistics· difficulty 2/5

The regression predicts MPG from weight (in 1000 lb units).

Predicting MPG from weight y-hat = 45 - 6.0 x x = weight (1000 lb) y = MPG

Interpret the slope -6.0.

  • A

    For each additional MPG, weight decreases by 6

  • B

    For each additional 1000 lb, predicted MPG decreases by 6

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  • C

    MPG decreases by 6% per pound

  • D

    Heavier cars get 6 MPG

Explanation

Slope is the predicted change in MPG (y) per one-unit (1000 lb) increase in x.

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