Question

Kiley gathered the data in the table. She found the approximate line of best fit to be y = 1.6x – 4.

What is the residual value when x = 3?


A.–1.8

B.–0.2

C.0.2

D.1.8

Answer 1

the correct answer is D)1.8

Explanation:

When you plug the value 3 into the formula you get the experimental value of 0.8 then you subtract -1 so the negative one turns into a positive one. then you add because both signs change. hope this helps

Answer 2

The difference between the observed value of the dependent variable (y) and the predicted value (ŷ) is called the residual (e). When x is equal to 3, the value of y from the best fit line would be 0.8. Therefore, the residual would be -1 - 0.8 = -1.8. Option A is the correct answer.