Answer:
The best estimate of the residual value when x = 2 is:
-0.5
Step-by-step explanation:
We are asked to find the best estimate of the residual value when, x=2.
We know that:
" A residual is the vertical distance between a data point and the regression line. It is positive if the data point is above the regression line and negative if they are below the regression line ".
Hence, at x=2.
we have value=4.
but the value on the regression line at x=2 is 4.5
Hence, the vertical distance is:
4.5-4=0.5
As the data point lie below the regression line. hence the residual value will be negative.
Hence, the best estimate of the residual value when x = 2 is -0.5.
