Question

A data set contains three points, and two of the residuals are -12 and 24. what is the third residual?

A.24 B.-24 C.12 D.-12

Answer 1

The answer is D.-12 because we can use the formula

Answer 2

we know that
the sum of the residuals must be equal to zero

let
x------> the third residual

-12+24+x=0
12+x=0-----> add -12 both sides
x=-12

the answer is
the third residual is -12