Probability Distribution Variance (Jee Mains) | ExamDuo
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Dispersion and Variance
Medium
Probability Distribution Variance
A random variable X has the following probability distribution
X
1
2
3
4
5
P(X = x)
k
2k
3k
2k
k
Its variance is
SELECT ONE OPTION
A
3
4
B
4
3
C
5
4
D
4
5
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