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If the mean of observation x1, x2, ...., xn is x, then the mean of x1 + a, x2 + a, ....., xn + a is(a) ax(b) x-a(c) x+a(d) xa |
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Answer» If the mean of observation , then the mean of x1 + a, x2 + a, ....., xn + a is (a) (b) (c) (d) |
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