If the standard deviation of 1-2- - 10 is - then the standard deviation of 11-12- - - -20 is

The correct option is B 10 + σAll the values are increased by 10. ∴ S.D. remains unchanged ...

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Standard Deviation about Mean

If the standa...

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If the standard deviation of 1, 2, ….. 10 is $σ$ , then the standard deviation of 11, 12, ……. 20 is

σ

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10 σ

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10 + σ

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Can’t be determined

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