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Model Perspective
Model Perspective
Nov 18, 2022 · Fundamentals

How to Use an F-Test to Compare Stock Return Variances: A Step-by-Step Example

This article walks through a complete F‑test example comparing the monthly return variances of IBM and HP stocks over 36 months, detailing hypothesis formulation, calculation of the test statistic, critical value lookup, and interpretation of results to determine if the variances differ significantly.

F-testfinancial analysishypothesis testing
0 likes · 2 min read
How to Use an F-Test to Compare Stock Return Variances: A Step-by-Step Example
Model Perspective
Model Perspective
Nov 17, 2022 · Fundamentals

How to Use an F-Test to Compare Stock Return Variances: A Step-by-Step Guide

This article explains the null and alternative hypotheses for one‑ and two‑tailed variance tests, demonstrates how to compute the F‑statistic and critical value, and walks through a practical example comparing the monthly return standard deviations of IBM and HP stocks, concluding that their variances are not significantly different.

F-testhypothesis testingstatistics
0 likes · 2 min read
How to Use an F-Test to Compare Stock Return Variances: A Step-by-Step Guide