JEE MATHEMATICS MCQ: STATISTICS

1 Hard

1 of 1

Analyzing +4 | -1

The mean square deviation of a set of

\mathrm{m}

observations

y_1, y_2 \ldots . y_m

about a point

K

is defined as

\frac{1}{m} \sum\limits_{{i=1}}^{m}\left(y_i-k\right)^2

. The mean square deviation about -3 and 3 are 16 and 8 respectively, then standard deviation of this set of observation?

View answer and explanation

Correct option: A

\frac{\sqrt{23}}{3}

Option A (

\frac{\sqrt{23}}{3}

) is correct because it is the standard deviation calculated from the given mean square deviations about -3 and 3.

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