The following stem-and-leaf plot is for the mean August temperatures (Fahrenheit) in 20 U.S. cities. The "stem" (row label) gives the first digit of a temperature, while the "leaf" gives the second digit (Data source: temperature dataset on the companion website).
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6
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44
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6
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89
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7
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01124
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7
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56667
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8
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1223
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8
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5
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9
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2
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a. Describe the shape of the dataset. Is it skewed or is it symmetric?
b. What is the highest temperature in the dataset?
c. What is the lowest temperature in the dataset?
d. What percent of the 20 cities have a mean August temperature in the 80s?