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11 December, 04:58

John got the follow scores on his tests what is the interquartile range of his scores 78,57,90,60,89,69,95

A. 18

B. 20

C. 30

D. 38

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Answers (1)
  1. 11 December, 05:02
    0
    57, 60, 69, 78, 89, 90, 95 (90-60=30) Answer = C. 30
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