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A line of best fit predicts that when x equals 30, y will equal 34.215, but y actually equals 32. What is the residual in this case?

A-2.215
B2.215
C4.215
D-4.215

Verified Answer :

JeanaShupp

Answer: A. - 2.215

Step-by-step explanation:

• A residual is the difference between the actual value and the predicted value in a regression model. It represents the vertical distance from the actual point to the point on the regression line.

\(\text{Residual=Actual value of y -predicted value of y}\\\\\Rightarrow\text{Residual}=32-34.215\\\\\Rightarrow\text{Residual}=-2.215\)

Hence, the residual in this case = -2.215

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