Mathematics · Statistics

The variance of the sample mean (X ) for a sample of size n drawn from a population with variance σ2 is calculated as:

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1x2n
2xn
3σ2n✓
4σ2μ2

Correct answer

σ2n

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The variance of the sample mean (X ) for a sample of size n drawn from a population with variance σ2 is calculated as:

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