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JEE Main 2014 Mathematics question

MathematicsStatisticsJEE Main 2014

Let and M.D. be the mean and the mean deviation about of n observations , i = 1, 2, …, n. If each of the observations is increased by 5, then the new mean and the mean deviation about the new mean, respectively, are :

Answer: (2)

Solution

Adding a constant 5 to every observation raises the mean by 5. Each deviation becomes $ + 5) - (Missing argument for \bar\bar X + 5) =

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Question ID VK-104598