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ACT
ACT Math Section

Calculating Interquartile Range from Study Hours

Hard Preparing For Higher Math Statistics And Probability

A statistics teacher collected data on the number of hours her students study per week. The data shows the following:

  • 3
  • 4
  • 7
  • 8
  • 9
  • 10
  • 12
  • 12
  • 15
  • 16

Calculate the interquartile range (IQR) of the data set.

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