Select an answer from the options below and click Submit.
Question 1
Determine the curve of best fit. Select the answer below that best describes your regression analysis.
Answer: Correct! Go to question 2.
Answer: Incorrect. The answer is B.
An exponential regression curve would be a good fit because the residual plot shows no pattern and the points are approximately equally distributed about the horizontal axis. The residual plot is shown below.
Go to question 2.
Answer: Incorrect. Try again. Refer to the Residual Plots Tip below for help.
Question 2
An exponential regression curve best models a certain car’s depreciation over the years. The table above shows the decrease in value of the automobile.
Which year produces the greatest residual value in the residual plot formed from the exponential regression analysis?
Answer: Correct!
Answer: Incorrect. The answer is B. The circled point in the residual plot below represents the largest residual.
Answer: Incorrect. Try again. Plot the residual plot in the graphing calculator and trace each point. Look for the greatest y value. Note the y values in a residual plot are the values of the residuals.
