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[" 4.The mean of "n" items is "bar(x)" ....

[" 4.The mean of "n" items is "bar(x)" .If the first item is increased "],[" by "1," second by "2" and "s0" on,then the new mean is "],[[" 1) "bar(x)+1," 2) "bar(x)+(n)/(2)" 3) "bar(x)+(n+1)/(2)],[" 4) None of these "]]

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