In one-way analysis of variance,the within-sample variation is not affected by whether the null hypothesis is true on not.

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In one-way analysis of variance, the within-sample variation or the error variance is solely dependent on the variability of the individuals within each group, and is not affected by whether the null hypothesis is true or not. Thus, the within-sample variation remains constant irrespective of the hypothesis being tested.

In One-Way Analysis of Variance,the Within-Sample Variation Is Not Affected