Compare variances (or standard deviations)
Some common hypothesis tests
Practical sheet REF: FIC1439 V1
Compare variances (or standard deviations)
Some common hypothesis tests

Author : Laurent LEBLOND

Publication date: February 10, 2015 | Lire en français

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4. Compare variances (or standard deviations)

As with comparisons of averages, comparisons of variances are used to determine whether two batches of parts have identical variabilities, or whether two operators or two laboratories find results with statistically different dispersions when measuring the same entity.

4.1 Comparison of a variance with a limit under the assumption of normality

To compare a theoretical variance σ2 to a limit l2 set from a sample (x1,  …,  xn1)...

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