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In the example provided, the quartiles are:

25% = 16.5 (the median of {15, 16, 17, 18})

50% = 18.5 (the median of {15, 16, 17, 18, 19, 20, 21, 22})

75% = 20.5 (the median of (19, 20, 21, 22})

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โˆ™ 2012-06-22 10:08:06
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Q: What is the 25th and the 75th percent quartile of 15 16 17 18 19 20 21 22?
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