Syntax

FDIST( <number>, <number>, <number>; <boolean>)

Description

Returns the F probability distribution for a certain value with given degrees of freedom for the numerator and degrees of freedom for the denominator.

or

Returns the Probability Density Function or the Cumulative Distribution Function for the F distribution. This function is frequently used to measure the degree of diversity between two data sets.

The function arguments are:

x: The value for which the distribution should be computed (NUMERIC)
df1: Numerator degrees of freedom (NUMERIC)
df2: Denominator degrees of freedom (NUMERIC)
Cumulative: Constant indicating the form of the function. If true then the cumulative distribution function is used. If false then the probability mass function is used. (BOOLEAN)

Cumulative/Boolean	Logical argument which defines the type of distribution to be calculated
True	uses the cumulative distribution function
False	uses the probability density function

Examples

FDIST(#input!VALUE; #input!DF1; #input!DF2; cumulative value)

VALUE	DF1	DF2	Cumulative value	FDIST returns
1	2	5	false	0.308
1	2	5	true	0.5688

Common Errors

#NUM!

-

Occurs if either:

The x value is less than 0
The numerator or denominator is less than 1

#VALUE!

-

Occurs if the argument type isn't numeric

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