Variance of Random Variable (Jee Mains) | ExamDuo
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Dispersion and Variance
Medium
Variance of Random Variable
Let x be a random variable with distribution.
x
-2
-1
3
4
6
P(X = x)
1
5
a
1
3
1
5
b
If the mean of X is
2.3
and variance of X is
σ
2
, then
100
σ
2
is equal to
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