JEE MATHEMATICS MCQ: STATISTICS

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Ravi obtained 70 and 75 marks in first two unit tests. Then, the minimum marks he should get in the third test to have an average of at least 60 marks, are

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Correct option: B

Option B (35) is correct because it is the minimum marks required in the third test to achieve an average of at least 60, calculated by setting up an inequality.

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If the mean of a set of observations

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\bar X,

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

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