# Calculate Arithmetic mean in R Programming – mean() Function

function in R Language is used to calculate the arithmetic mean of the elements of the numeric vector passed to it as argument.**mean()**

Syntax:mean(x, na.rm)

Parameters:x:Numeric Vectorna.rm:Boolean value to ignore NA value

**Example 1:**

`# R program to calculate` `# Arithmetic mean of a vector` ` ` `# Creating a numeric vector` `x1 <` `-` `c(` `1` `, ` `2` `, ` `3` `, ` `4` `, ` `5` `, ` `6` `)` `x2 <` `-` `c(` `1.2` `, ` `2.3` `, ` `3.4` `, ` `4.5` `)` `x3 <` `-` `c(` `-` `1` `, ` `-` `2` `, ` `-` `3` `, ` `-` `4` `, ` `-` `5` `, ` `-` `6` `)` ` ` `# Calling mean() function` `mean(x1)` `mean(x2)` `mean(x3)` |

**Output:**

[1] 3.5 [1] 2.85 [1] -3.5

**Example 2:**

`# R program to calculate` `# Arithmetic mean of a vector` ` ` `# Creating a numeric vector` `x1 <` `-` `c(` `1` `, ` `2` `, ` `3` `, NA, ` `5` `, NA, NA)` ` ` `# Calling mean() function` `# including NA values` `mean(x1, na.rm ` `=` `FALSE)` ` ` `# Calling mean() function` `# excluding NA values` `mean(x1, na.rm ` `=` `TRUE)` |

**Output:**

[1] NA [1] 2.75