Q.

If in a frequency distribution, the mean and median are 21 and 22 respectively, then its mode is approximately

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a

22.0

b

20.5

c

25.5

d

24.0

answer is D.

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Detailed Solution

Mode + 2mean = 3 median ⇒mode=3×22−2×21=66−42=24 .
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If in a frequency distribution, the mean and median are 21 and 22 respectively, then its mode is approximately