Statistical Inference

Inference

Estimate population parameters, test hypotheses, assess distributional assumptions, and run rank-based procedures using pasted raw data or summary statistics.

Confidence Interval for a Variance Ratio

Estimate σ₁² / σ₂² using the F distribution.

Interactive inference

Input mode

Raw data Summary statistics

Data

Paste Sample 1 in the first column and Sample 2 in the second. Blank cells are allowed for unequal sample sizes.

Sample 1

n₁

s₁²

Sample 2

n₂

s₂²

Confidence level (%)

Enter the confidence level as a percentage. Example: 95 means 95% confidence and implies α = 0.05.

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Ready to calculate

Choose the input mode, paste data or enter summary statistics, then press Calculate.