UPSC NDA I 2017 Mathematics Solved Paper

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Question : 82 of 120

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If the data are moderately non-symmetrical, then which one of the following empirical relationships is correct?

[NDA I 2017]

2 x Standard deviation = 5 x Mean deviation
5 x Standard deviation = 2 x Mean deviation
4 x Standard deviation = 5 x Mean deviation
5 x Standard deviation = 4 x Mean deviation

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