A line of best fit is a line drawn at average distance to a series of scattered points. Thus, the correct option is:
Option B. The data point is 4. 5 units below the line of best fit.
A graph is said to be formed by plotted points on a Cartesian coordinate plane. When the plotted points are scattered, a line of best fit is required to shoe the relationship among the plotted points.
A residual value is a form of error that is determined from the line of best fit. A line of best fit is a line drawn at average point to a series of plotted scattered points.
Therefore, a residual value of 4.5 with respect to a line of best fit implies that: The data point is 4. 5 units below the line of best fit.
Thus the correct option is B.
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