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JEE MATHEMATICS MCQ: STATISTICS

1 Hard

1 of 1

Application +4 | -1

In a set of

2 \mathrm{n}

observations, half of them are equal to '

\mathrm{a}

' and the remaining half are equal to '-

\mathrm{a}^{\prime}

. If the standard deviation of all the observations is 2 ; then the value of

|a|

is :

View answer and explanation

Correct option: A

2

Option A (2) is correct. The standard deviation is calculated using the given information about the observations.

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