HypothesisTesting`
HypothesisTesting`

# FRatioCI

FRatioCI[ratio,n,m]

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

# Details and Options

• 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 , and where is the 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 .
• The following option can be given:
•  ConfidenceLevel 0.95 probability associated with a confidence interval

# Examples

open allclose all

## Basic Examples(1)

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

## Options(1)

### ConfidenceLevel(1)

A 99% confidence interval:

Wolfram Research (2007), FRatioCI, Wolfram Language function, https://reference.wolfram.com/language/HypothesisTesting/ref/FRatioCI.html.

#### Text

Wolfram Research (2007), FRatioCI, Wolfram Language function, https://reference.wolfram.com/language/HypothesisTesting/ref/FRatioCI.html.

#### CMS

Wolfram Language. 2007. "FRatioCI." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/HypothesisTesting/ref/FRatioCI.html.

#### APA

Wolfram Language. (2007). FRatioCI. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/HypothesisTesting/ref/FRatioCI.html

#### BibTeX

@misc{reference.wolfram_2022_fratioci, author="Wolfram Research", title="{FRatioCI}", year="2007", howpublished="\url{https://reference.wolfram.com/language/HypothesisTesting/ref/FRatioCI.html}", note=[Accessed: 29-May-2023 ]}

#### BibLaTeX

@online{reference.wolfram_2022_fratioci, organization={Wolfram Research}, title={FRatioCI}, year={2007}, url={https://reference.wolfram.com/language/HypothesisTesting/ref/FRatioCI.html}, note=[Accessed: 29-May-2023 ]}