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18 The following grouped frequency distribution represents the ages of women marrying in St. Clair County for the month of January. Age Frequency (f) 16-20

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18 The following grouped frequency distribution represents the ages of women marrying in St. Clair County for the month of January. Age Frequency (f) 16-20 21-25 26 26-30 27 31-35 14 36-40 6 41-45 4 Total 80 a. Identify the class width. b. Identify the upper limit of class 4. c. Identify the class mark of the second class

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