METHODS OF DATA ANALYSIS
MEASURES OF DISPERSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Calculate the interquartile range of the following data:17, 18, 18, 19, 20, 21, 21, 23, 25
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3
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8
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4
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5
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Explanation:
Detailed explanation-1: -Hence, the required answer is 21.
Detailed explanation-2: -Therefore, the lower quartile is 9.
Detailed explanation-3: -The interquartile range is the difference between the first quartile 7 and the third quartile 15 . In this case, the difference between the first quartile 7 and the third quartile 15 is 15−(7) .
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