Chapter 2: Q. 2.78 (page 69)
Construct a stem-and-leaf diagram for the data, using five lines per stem.

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Chapter 2: Q. 2.78 (page 69)
Construct a stem-and-leaf diagram for the data, using five lines per stem.


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Gas Mileage. The gas mileages, are rounded to the nearest number of miles per gallon, of all new car models.
Use limit grouping with the first class of and a class width of .

Explain the advantages and disadvantages of frequency histograms versus frequency distributions.
RBI Kings, As reported on MLB.com, the five players with the highest runs batted in (RBI) during the 2012 Major League Baseball season are listed in the following table. Also included are the teams for which they played, their positions, and their weights. Identify the type of data provided by the information in each column of the table.

Adjusted Gross Incomes. The Internal Revenue Service (IRS) publishes data on adjusted gross incomes in Statistics of Income, and Individual Income Tax Returns. The following relative frequency histogram shows one year's individual income tax returns for adjusted gross incomes of less than .
Use the histogram and the fact that adjusted gross incomes are expressed to the nearest whole dollar to answer each of the following questions.
a. Approximately what percentage of the individual income tax returns had an adjusted gross income betweenand , inclusive?
b. Approximately what percentage had an adjusted gross income of less than ?
c. The IRS reported that individual income tax returns had an adjusted gross income of less than . Approximately how many had an adjusted gross income between and , inclusive?
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