Mathematics · 2019
JEE Main · 12 January 2019, Shift 2 · Q85
The mean and the variance of five observations are 4 and 5.20, respectively. If three of the observations are 3, 4 and 4; then the absolute value of…
The mean and the variance of five observations are $\displaystyle 4$ and $\displaystyle 5.20$, respectively. If three of the observations are $\displaystyle 3$, $\displaystyle 4$ and $\displaystyle 4$ ; then the absolute value of the difference of the other two observations, is :
Official answer
(4)
$\displaystyle 7$
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JEE Main 2019 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.