What is the F-Test Calculator?

The F-Test Calculator is a statistical tool that helps students, researchers, and analysts determine whether the variances of two independent samples are significantly different. By entering the variances of both samples, the calculator computes the F-statistic, which can be used to test hypotheses about equality of variances. This is particularly useful in analysis of variance (ANOVA), experimental research, and quality control, providing quick and accurate results without manual computation.

How to Use:

1. Enter Variance of Sample 1 (s₁²): Input the variance of the first sample. Must be greater than 0.
2. Enter Variance of Sample 2 (s₂²): Input the variance of the second sample. Must be greater than 0.
3. Click “Calculate”: The tool computes the F-statistic using the formula F=s12s22F = \frac{s_1^2}{s_2^2}F=s22​s12​​.
4. Review Result: The output displays both sample variances and the calculated F-statistic, with clear formatting for easy interpretation.