# 3.5.3.3.3 Ftable

## Definition:

The Ftable(x, m, n) function is the F distribution function with m and n degrees of freedom. x is usually called the significance level.

The F distribution is used in calculating confidence limits for parameters in nonlinear regression.

## Parameters:

x
the significance level
m
the degrees of freedom of the numerator variance
n
the degrees of freedom of the denominator variance

## Examples:

Ftable(0.95, 2, 15) = 3.68232
Ftable(0.95, 4, 10) = 3.47805