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