# F.DIST

**Definition/Description of Formula:**

Calculates the left-tailed F probability distribution (degree of diversity) for two data sets with given input x. Alternately called Fisher-Snedecor distribution or Snecdor's F distribution.

**Syntax:**

`F.DIST(x, deg_num, deg_den, cumulative)`

`x`

- The input to the F probability distribution function. The value at which to evaluate the function. Must be a positive number.`deg_num`

- The numerator degrees of freedom.`deg_den`

- The denominator degrees of freedom.`cumulative`

- Logical value that determines the form of the function.- If
`TRUE`

:`F.DIST`

returns the cumulative distribution function. - If
`FALSE`

:`F.DIST`

returns the probability density function.

- If

**Remarks:**

- Both
`deg_num`

and`deg_den`

are truncated to an integer in the calculation if a non-integer is provided as an argument. - Both
`deg_num`

and`deg_den`

must be greater than`1`

and may not exceed`10^10`

. `x`

,`deg_num`

, and`deg_den`

must be numeric.

**See Also:**

: Calculates the right-tailed F probability distribution (degree of diversity) for two data sets with given input x. Alternately called Fisher-Snedecor distribution or Snedecor's F distribution.`FDIST`

: Calculates the right-tailed F probability distribution (degree of diversity) for two data sets with given input x. Alternately called Fisher-Snedecor distribution or Snedecor's F distribution.`F.DIST.RT`

: Calculates the negative inverse of the one-tailed TDIST function.`T.INV`

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