Question

A line of best fit predicts that when x equals 33, y will equal 31.65, but y

actually equals 31. What is the residual in this case?
A. -0.65
B. 1.35
C. 0.65
D. 2

Answer 1

The residual is the difference between the predicted value of y and the actual value of y at a given value of x. In this case, the predicted value of y is 31.65 and the actual value of y is 31 when x equals 33.

So, the residual is:

residual = actual value of y - predicted value of y
= 31 - 31.65
= -0.65

Therefore, the answer is A. -0.65.