Question

A line of best fit predicts that when x equals 28, y will equal 27.255, but y actually equals 26. What is the residual in this case?

A. 0.745
B. -0.745
C. -1.255
D. 1.255​

Answer 1

C) -1.255

Explanation:

We are tasked to solve for the residual value given that when x equals 29, y will be equals to 27.255. But, when it is tested, y actual value is 26. The formula in solving residual is shown below:

Residual value = Observed value - predicted value

Residual value = 26 - 27.255

Residual values = -1.255

The answer is -1.255 for residual value.