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Mathematics 10 Online
OpenStudy (anonymous):

The data represents the miles per gallon (mpg) for vehicles manufactured by a company in the past five years. Find the first quartile, Q1, of the data. Data: 28.7, 25.5, 21.8, 21.6, 20.5, 16.7, 16.3, 15.4, 13.9.

OpenStudy (anonymous):

15.85 = (15.4+16.3)/2

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