Question

Read the following description and then complete the sentence that follows. Rudy is a novice cook trying to perfect his baked potato recipe. He decides to put many potatoes in the oven and invites all his friends over. Every few minutes he takes a potato out of the oven and asks some friends to rate its taste on a scale from 1 to 10, where 10 is excellent. For each taste, Rudy writes down the number of minutes the potato spent in the oven, x, as well as its rating from 1 to 10, y.

The least squares regression line of this data set is: 1.685x-119.746

For each additional minute a potato spends in the oven, the least squares regression line predicts its rating will increase by _____.
119.746
-119.746
1.685
-1.685

Answer 1

1.685