Financial Experts versus the Darts. This set of exercises examines measures of relative position using the Darts data set from the Chapter 3 Case Study. Open the Darts data set. Use technology to do Exercises 106–112.
Question 3.366
darts
111. Calculate and interpret the IQR for each group.
3.4.111
Pros: IQR = 32.4
For the professionals, the middle 50%, or middle half, of the change in stocks data ranged over 32.4%.
Darts: IQR = 20.60
For using darts, the middle 50%, or middle half, of the change in stocks data ranged over 20.60%.
DJIA: IQR = 11.65
For the DJIA, the middle 50%, or middle half, of the change in stocks data ranged over 11.65%.