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If variance of `1, 3, 5, 7, …….. 215` is `A^(2)` then standard deviation of `1, 5, 9, 13, …..429` in terms of `A` is :A. `2A`B. `2A^(2)`C. `|A|`D. `2|A|` |
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Answer» Correct Answer - D If variance of………. If we use change to origin and scale `u_(1) = 2x_(1)-1` then we get `1, 5, 9, 13`, ……… from `1, 3, 5, 7` ……….. Hence required `S.D. = 2|A|` |
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