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12. The following are frequency distributions of the ages of inpatients at a substance abuse treatment hospital by the major diagnoses of cocaine addiction and

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12. The following are frequency distributions of the ages of inpatients at a substance abuse treatment hospital by the major diagnoses of cocaine addiction and alcohol addiction (fictional data). a. Construct overlying frequency polygons of these data. Caution: The sample sizes differ. b. What does the graph reveal? Chapter 3 Charts and Graphs: A Picture Says a Thousand Words 95 Cocaine Addicts Alcohol Addicts Age 26 27 28 29 11 30 13 31 32 NUIJUJUDOUIWNNE 33 35 36 3 38

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