Solution-The following frequency distribution presents a

The following frequency distribution presents a set of exam scores for a class of N = 20 students. What is the percentile rank for X = 90?

x f cf c%

90-99 4 20 100

80-89 7 16 80

70-79 4 9 45

60-69 3 5 25

50-59 2 2 10

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