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The average of n observation is \(\overline { X }\). If we add 1 in first term, 2 in second term similarly 3, 4, 5, ………., n, then new mean will be:(A) \(\overline { X }\) + n(B) \(\overline { X }\) + \(\frac { n }{ 2 }\)(C) \(\overline { X }\) + \(\frac { n+1 }{ 2 }\)(D) None of these |
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Answer» Answer is (C) \(\overline { X }\) + \(\frac { n+1 }{ 2 }\) |
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