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THE FEUTEX TOOLKIT

Two-Sample Variance Ratio

Compute an F variance-ratio statistic and degrees of freedom from two samples.

Statistics workspace● Runs in your browser
01 Your input
02 Your result
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FormulaF = s1**2/s2**2; Df1 = n1-1; Df2 = n2-1
Sources and model references

Made for real tasks

  • Compute an F variance-ratio statistic and degrees of freedom from two samples.
Explore step-by-step workflows →

Worked example

Inputs

First sample standard deviation
4 number
Second sample standard deviation
2 number
First sample size
20 count
Second sample size
15 count

Expected results

F
4 number
Df1
19 degrees of freedom
Df2
14 degrees of freedom

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter first sample standard deviation, second sample standard deviation, first sample size, second sample size.
  2. Use the displayed units and confirm the model assumptions.
  3. Calculate and compare the outputs against your input scenario.

Try this example

{
  "s1": 4,
  "s2": 2,
  "n1": 20,
  "n2": 15
}

Accuracy and scope

Independent normal samples are required for the classical F test. Statistic only; no p-value or automatic significance conclusion.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.