Model Perspective
Nov 17, 2022 · Fundamentals
Can a Stock’s Volatility Remain Unchanged? Applying the Chi‑Square Test for Variance
This article explains how to use a chi‑square test to assess whether a population variance, such as a stock’s monthly return standard deviation, equals a specified constant, detailing hypothesis formulation, test statistic calculation, critical value lookup, and interpretation of results.
chi-square testsignificance testingstatistical inference
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