My Math Forum A (hopefully) Easy Question about the Interquartile Range

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 April 19th, 2017, 11:59 PM #1 Senior Member   Joined: Jan 2017 From: US Posts: 111 Thanks: 6 A (hopefully) Easy Question about the Interquartile Range Construct a box-and-whisker plot for the data with a minimum of 34, first quartile of 37, median of 42, third quartile of 52, and a maximum of 60. Solve for the interquartile range. Upload your plot for your teacher to review. Ok, so I know how to construct a box-and-whisker plot, I just want to make sure that I have solved for the interquartile range correctly. This is the formula for interquartile range: IQR= xu-xl I am thinking, from the data, that the upper quartile would be 60 and the lower quartile would be 34. Am I correct in assuming that the minimum is the lower quartile and the maximum is the upper quartile? I guess that is my main question here. So, I have done: IQR=60-34 IQR=26 Did I do this correctly? Thanks!

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