Question

Consider the graph of the line of best fit, y = 0.5x + 1, and the given data points.

Answer 1

Which is the residual vaulewhen x=2
The answer would be -1

Answer 2

The residual value is the vertical distance between the observed value and the predicted value. In other words,

residual value = point in scatter plot - point in the line of best fit

When $x=2$, the corresponding scatter plot point is at $y=1$ and the corresponding point in the line of best fit is $y=2$ [can be seen from the graph]

Hence,

residual value = $1-2=-1$. Answer choice B is correct.

ANSWER: B