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Hypothesis Testing Package Symbol

FRatioCI

FRatioCI[ratio, n, m]
gives a confidence interval based on an F-ratio distribution with n and m degrees of freedom.

To use FRatioCI, you first need to load the Hypothesis Testing Package using Needs["HypothesisTesting`"].

FRatioCI[ratio, n, m] gives a confidence interval {min, max} for a ratio of variances estimated by ratio.

For confidence level , min=ratio/q_(1+)/2 and max=ratio/q_(1-)/2 where q_i is the i quantile of an F-ratio distribution with n numerator and m denominator degrees of freedom.

FRatioCI is the confidence interval for a ratio of population variances based on sample variances estimated from samples of size and .

0.95

probability associated with a confidence interval

A 95% confidence interval based on an F-ratio distribution:

Needs["HypothesisTesting`"]

A 95% confidence interval based on an F-ratio distribution:

A 99% confidence interval: