Variance of a constant number is _____?

Explanation

Variance measures the spread of values around the mean.

For a constant number, all values are the same, so there is no spread.

Formula: Variance=∑(xi​−xˉ)^2/n​

Here, xi​=xˉ for all i → $(x_i - bar{x})^2 = 0$

Therefore, variance = 0.

Last updated question 25 feb 2026

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