The outcome of each of 30 items was observed;10 items gave an outcome 1/2 -d each, 10 itemsgave outcome 1/2 each and the remaining10 items gave outcome 1/2 + d each. If thevariance of this outcome data is 4/3 then |d| equals : [11 Jan 2019 Shift 1]

JEE Main 11 Jan 2019 Shift 1 Solved Paper

Section: Mathematics

Question : 33 of 90

Marks: +1, -0

The outcome of each of 30 items was observed;10 items gave an outcome

-d each, 10 itemsgave outcome

each and the remaining10 items gave outcome

+ d each. If thevariance of this outcome data is

then |d| equals :

[11 Jan 2019 Shift 1]

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