From the graph in the figure attached to the question, The best estimate of the residual value when x = 1 on the graph is 1.5
What is a residual value in the graph?
A residual value is an indication of how far a regression line fails to reach a data point vertically. From the graph in the figure attached to the question;
We can see how the regression line lies at the midpoint between 3 to 4 on the vertical axis at x = 1. However, the data point is located at 5, so we have the distance of the residual value to be from the midpoint of 3 to 5 which is equal to 1.5
Learn more about residual value here:
https://brainly.com/question/26080178
