Standard Deviation Confidence Interval For Variance Calculator
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Calculate the standard deviation confidence interval for variance with the known values of confidence level and sample size.

Confidence Interval For Variance Calculation

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Calculate the standard deviation confidence interval for variance with the known values of confidence level and sample size.

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Formula

Standard Deviation Confidence Interval for Variance = [(n-1)×S² / χ²α/2, n-1] ≤ σ² ≤ [(n-1)×S² / χ²1-α/2, n-1] Where, n = Sample Size S = Variance α = 1 - (Confidence Level/100) χ²α/2, n-1 = χ²-table value

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