Use cutpoint grouping with a first class of 10–under 15. 12.7 20.9 22.0 10.1 22.0 16.6 26.2 38.8 17.3 19.5 15.8 24.3 13.2 12.9 16.4 24.5 25.2 22.0 20.8 26.9   a). determine a frequency distribution. b). obtain a relative-frequency distribution. c). construct a frequency histogram based on your result from part (a). d). construct a relative-frequency histogram based on your result from part (b).

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