If the median of a dataset is 40 and the first quartile is 30, the third quartile is 50. The interquartile range is: MCQ with Answer and Explanation

If the median of a dataset is 40 and the first quartile is 30, the third quartile is 50. The interquartile range is:
A. 40
B. 10
C. 80
D. 20
Answer: Option D
Solution (By JKSSB Mock Tests)
IQR = Q3 - Q1 = 50-30 = 20.

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