We have a data point (7,5), what is the residual if regression line is y=-2x+17?

1 Answer
Aug 3, 2017

Residual is $2$.

Explanation:

As the regression line is $y = - 2 x + 17$,

for $x = 7$ we have predicted value of $y$ is $- 2 \times 7 + 17 = 3$

but we have $y = 5$

Hence residual is $5 - 3 = 2$.