For a certain frequency distribution, the value of mean is 20 and mode is 11. Find the value of median.

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#### Solution

The inter-relation between the measures of central tendency is given by

Mean – Mode = 3(Mean-Median)

20 – 11 = 3 (20-Median)

9 = 3 (20-Median)

9/3= 20-Median

3=20 -Median

median =20-3

Median = 17

Concept: Median of Grouped Data

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