Mathematics · 2016
JEE Main · 10 April 2016, Shift 1 · Q86
The mean of 5 observations is 5 and their variance is 124. If three of the observations are 1, 2 and 6; then the mean deviation from the mean of the…
The mean of $\displaystyle 5$ observations is $\displaystyle 5$ and their variance is 124. If three of the observations are $\displaystyle 1$, $\displaystyle 2$ and $\displaystyle 6$ ; then the mean deviation from the mean of the data is :
Official answer
(2)
$\displaystyle 2.8$
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JEE Main 2016 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.