Free statistical calculators

Description

Performs an F-test to compare the known standard deviations of two independent samples.

Required input

For both samples, you enter:

• Standard deviation: the observed standard deviation.
• Sample size: the sample size or total number of observations in the sample.

Interpretation

In this test, the square of the standard deviations is calculated to obtain the corresponding variances, and an F-test is performed.

If the P-value is less than 0.05, the conclusion is that the two standard deviations indeed differ significantly.

How to cite this page

• MedCalc Software Ltd. Comparison of standard deviations. https://www.medcalc.org/calc/comparison_of_standarddeviations.php (Version 23.0.2; accessed September 7, 2024)