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F

Syntax: F(M, N, X)

M, N = degrees of freedom
X = upper bound

F returns the integral of Snedecor's F-distribution with M and N degrees of freedom from minus infinity to X. The function is given by:

\begin{displaymath}
F(m,n,x) = \int_0^x \frac{\Gamma \left( \frac{m+n}{2} \right...
...^{\frac{n}{2}}
(z)^{\frac{m-2}{2}}
(n+mz)^{\frac{m+n}{2}} dz
\end{displaymath}

Examples:

F(14, 35, 99) = 1

F(D3, W2, Y8) = Error - F, degrees of freedom must be , where D3 = .5, W2 = 0, and Y8 = .99

F(B1, B2, B3) = 0.77459667, where B1 = 1, B2 = 2, and B3 = 3

Excel function: N/A


next up previous contents index
Next: FACT Up: A. Function Reference Previous: EXP   Contents   Index
SpreadScript User's Guide, Version 1.2
Grey Trout Software
02 March 2003