# Compute the Value of F Density in R Programming – df() Function

Last Updated : 25 Jun, 2020

`df()` function in R Language is used to compute the density of F Distribution over a sequence of numeric values. It also plots a density graph for F Distribution.

Syntax: df(x, df1, df2)

Parameters:
x: Numeric Vector
df: Degree of Freedom

Example 1:

 `# R Program to compute  ` `# F Density ` ` `  `# Creating a sequence of x-values ` `x <``-` `seq(``1``, ``30``, by ``=` `2``) ` ` `  `# Calling df() Function ` `y <``-` `df(x, df1 ``=` `2``, df2 ``=` `3``) ` `y `

Output:

``` [1] 0.2788548009 0.0641500299 0.0255826045 0.0130822015 0.0077135607
[6] 0.0049883063 0.0034419784 0.0024918293 0.0018719698 0.0014482499
[11] 0.0011475506 0.0009274979 0.0007622781 0.0006355006 0.0005363874
```

Example 2:

 `# R Program to compute  ` `# F Density ` ` `  `# Creating a sequence of x-values ` `x <``-` `seq(``1``, ``30``, by ``=` `0.2``) ` ` `  `# Calling df() Function ` `y <``-` `df(x, df1 ``=` `3``, df2 ``=` `7``) ` ` `  `# Plot a graph ` `plot(y) `

Output: