# TFRatioApprox: Approximation of the ratio of two F probabilities In shuxiaoc/outference: Valid Inference in Linear Regression Corrected for Outlier Removal

## Description

This function returns an approximation of P(X \in E1)/P(X \in E2), where X is a central F random variable with df1, df2 degrees of freedom.

## Usage

 1 TFRatioApprox(df1, df2, E1, E2) 

## Arguments

 df1, df2 degrees of freedom of the F random variable. E1, E2 "Intervals" objects or matrices where rows represents a union of intervals with positive and finite endpoints.

## Value

This function returns the value of the approximation.

## References

Bryc, Wlodzimierz. "A uniform approximation to the right normal tail integral." Applied mathematics and computation 127.2 (2002): 365-374.

Peizer, David B., and John W. Pratt. "A normal approximation for binomial, F, beta, and other common, related tail probabilities, I." Journal of the American Statistical Association 63.324 (1968): 1416-1456.

shuxiaoc/outference documentation built on Dec. 5, 2017, 3:48 a.m.