Question

Use the graphing calculator tool to plot the residual points.

(1, 0.86), (2, –0.25), (3, –1.66), (4, –2.34), (5, –4.1)

Does the residual plot show that the line of best fit is appropriate for the data?

Yes, the points have no pattern.
Yes, the points are evenly distributed about the x-axis.
No, the points are in a linear pattern.
No, the points are in a curved pattern.

Answer 1

Plotting the residuals shows a clear downward trend (start positive at x=1, then increasingly negative). That is a linear pattern, so the line of best fit is not appropriate.

Answer: No, the points are in a linear pattern.