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JEE MATHEMATICS MCQ: STATISTICS

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If the first quartile is 104 and quartile deviation is 18 , then the third quartile is

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Correct option: B

140

Option B (140) is correct because the third quartile is calculated using the quartile deviation formula.

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If the mean of a set of observations

{x_1},{x_2}, \ldots ,{x_n}

\bar X,

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{x_i} + 2\;i;i = 1,\;2, \ldots ,n

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