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Class limits Class boundaries Class midpoints Frequency Cumulative frequency 19 - 23 18.5 - 23.5 21 1 24 - 28 23.5 - 28.5 26 A 29 - 33 28.5 - 33.5 31 6 34 - 38 33.5 - 38.5 36 39 - 43 38.5 - 43.5 41 W UN 13 44 - 48 43.5 - 48.5 46 16 49 - 53 48.5 - 53.5 51 N 18 Part 1 of 4 (a) How many values are in the class 28.5 - 33.5? The number of values in the class 28.5 - 33.5 is X Part 2 of 4