Confidence Interval Variance Formula - Probability And Estimation

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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