This exercise requires the use of a computer. Refer to the Medicare drug plan premium data of Exercise 5.8.
a. Construct a dotplot or a stem-and-leaf display of the lowest premium cost data.
b. Based on the display in Part (a), which of the following would you expect to be the case for the lowest cost premium data? i. the mean will be less than the median ii. the mean will be approximately equal to the median iii. the mean will be greater than the median
c. Compute the mean and median for the lowest cost premium data.
d. Construct an appropriate graphical display for the highest cost premium data.
e. Compute the mean and median for the highest cost premium data.