Concept explainers
The U.S. Department of Health and Human Services reported the estimated percentage of households with only wireless phone service (no land line) in 2014 for the 50 U.S. states and the District of Columbia (cdc.gov/nchs/data/nhis/earlyrelease/wireless_state_201602.
- a. Construct a stem-and-leaf display for the wireless percentage using the data from all 50 states and the District of Columbia. What is a typical value for this data set?
- b. Construct a comparative stem-and-leaf display for the wireless percentage of the states in the West and the states in the East. How do the distributions of wireless percentages compare for states in the East and states in the West? (Hint: See Example 3.11.)
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