Instructions: This exam covers the material from chapters 4 and 14. Please read
ID: 2946252 • Letter: I
Question
Instructions: This exam covers the material from chapters 4 and 14. Please read each question carefully before you attempt to solve them. Remember that you have to show all of your work clearly and use proper notation in order to get credit. Multiple choice answers without explanations will get zero points. Any problem requiring data will indicate such fact. The data can be found on the class website (canvas). The exam is closed book. Good luck! Problem 1 (10 pts): Multiple Choice Which of the following statements is true about checking for the constant standard deviation condition? a. If the points of the QQ plot are close to the straight line, then we can conclude the constant standard deviation condition is met. b. If the plot of the residuals against time shows no trend, then we can conclude the c. If the residual plot shows a fan shape, then we can conclude the constant standard d. If the residual plot shows no features such as a trend or a fan shape, then we can e. None of the above constant standard deviation condition is met. deviation condition is met. conclude the constant standard deviation condition is met.Explanation / Answer
Answer is d)
If the residual plot shows no feature such as trend of fan shape then we can conclude that the constant standard deviation is met.