AP EAMCET Engineering 2018 Apr 23 Shift 1 Paper

Section: Mathematics
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Question : 39 of 160
 
Marks: +1, -0
A random variable X has the following probability distribution
X = xi - 2 - 1 01 2
P (X = xi)
1
6
k
1
4
k
1
6

The variance of this random variable is
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