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The mean of n observations is \(\overline{X}.\) If k is added to each observation, then the new mean isA. \(\overline{X}\)B. \(\overline{X} + \text{k}\)C. \(\overline{X} - \text{k}\)D. \(\text{k}\overline{X}\) |
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Answer» Correct answer is B. Mean = (x1 + x2 + ...+ n terms)/N = x1 + k + x2 + k +...+n terms/N = Mean + k = \(\overline{X} + \text{k}\) |
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