December 2006
Beginner to intermediate
312 pages
5h 9m
English
1Caution: It is misleading to subdivide a frequency distribution when the frequency is expressed in percentage terms. For example, if 60 percent of women earn between, say, $5 and $10 an hour, and 50 percent of men earn the same, it cannot be said that combined, 110 percent of the people earn between $5 and $10 an hour.
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