This question was previously asked in

SSC CGL Tier-II ( JSO ) 2018 Official Paper ( Held On : 14 Sept 2019 )

Option 1 : 0

**Explanation:**

As there is no spread of variables around the mean, the variance for the degenerate distribution is zero (Var(X) = 0).

__Important Points__

The symbol of Sample variance = S

S = ∑(x - x̅ )^{2}/(n - 1)

x̅ = mean of all observation

x = value of the observation

n = number of observations

**variance is the expectation of the squared deviation of a random variable from its mean**

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