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Question
If Q1 = 30 and Q3 = 50, the coefficient of quartile deviation is
Options
20
40
10
0.25
Solution
0.25
Explanation:
Coefficient of quartile deviation = `("Q"_3 - "Q"_1)/("Q"_3 + "Q"_1)`
= `(50 - 30)/(50 + 30)`
= `20/80`
= `1/4`
= 0.25
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