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What is the interquartile Range for the following data set? {5,6,7,3,9,8,3,1,6,7,7}

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To find the interquartile range of the data, you get both quartile one (1) and two (2) and subtract the larger number from the lower number.

Q3 - Q1 = Interquartile range

Your answer, in turn, would be...
4

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