Mathematics · Variance and Standard Deviation
Which of the following correctly expresses the population variance (σ2)?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1σ2 = Σ(xi − x̄)n
- 2σ2 = Σxi2n
- 3σ2 = Σ(xi − x̄)2n − 1
- 4σ2 = Σ(xi − x̄)2n✓
Correct answer
σ2 = Σ(xi − x̄)2n
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