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Variance of a constant number is _____?
  1. 2
  2. 1
  3. 0
  4. None of these
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:

  • Here, for all i → (x_i - bar{x})^2 = 0

  • Therefore, variance = 0.


    Last updated question 25 feb 2026

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