Statistics

JEE Main · Mathematics · 13 past questions

These are the board's own papers. 130 more board questions reprinted in the books we use in class are for signed-in students: sign in.

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1. Q11 2021 3 Aug Shift 1

   If $\sum_{i=1}^{16} (a_i - 6) = 8$ and $\sum_{i=1}^{16} (a_i - 6)^2 = 40$, then the standard deviation of…

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2. Q12 2021 3 Aug Shift 2

   The mean and variance of 7 observations are 7 and 18 respectively. If 5 of the observations are 2, 4, 10, 11…

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3. Q13 2021 4 Aug Shift 2

   The mean and the variance of seven observations are 8 and 16 respectively. If five of the observations are 2…

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