**statistics.mean() Method in Python:**

The statistics. mean() method computes the mean (average) of a data set given.

**mean:** To calculate the mean, add all of the given values and divide by the number of values.

for example

let list = [5, 10, 15, 20]

mean= 5+10+15+20/4 = 12.5

**Syntax:**

statistics.mean(data)

**Parameters**

**data:** This is Required. It is the data values that will be used (it can be any sequence, list, or iterator).

**Note:** It is to be noted that if the data is empty, it returns a StatisticsError.

**Return Value:**

Returns aÂ float value that represents the mean of the given data.

**Examples:**

**Example1:**

**Input:**

Given list = [10, 20, 40, 15, 30]

**Output:**

The mean of the given list items [10, 20, 40, 15, 30] = 23

**Example2:**

**Input:**

Given list = [-1, -2, 6, 7, 4, 9]

**Output:**

The mean of the given list items [-1, -2, 6, 7, 4, 9] = 3.8333333333333335

statistics.mean() Method with Examples in Python

### Method #1: Using Built-in Functions (Static Input)

**Approach:**

- Import statistics module using the import keyword.
- Give the list as static input and store it in a variable.
- Pass the given list as an argument to the statistics.mean() method that computes the mean (average) of the given list items.
- Store it in another variable.
- Print the mean (average) of the given list items.
- The Exit of the Program.

**Below is the implementation:**

# Import statistics module using the import keyword. import statistics # Give the list as static input and store it in a variable. gvn_lst = [10, 20, 40, 15, 30] # Pass the given list as an argument to the statistics.mean() method that # computes the mean (average) of the given list items. # Store it in another variable. rslt = statistics.mean(gvn_lst) # Print the mean (average) of the given list items. print("The mean of the given list items", gvn_lst, " = ", rslt)

**Output:**

The mean of the given list items [10, 20, 40, 15, 30] = 23

### Method #2: Using Built-in Functions (User Input)

**Approach:**

- Import statistics module using the import keyword.
- Give the list as user input using list(),map(),input(),and split() functions.
- Store it in another variable.
- Pass the given list as an argument to the statistics.mean() method that computes the mean (average) of the given list items.
- Store it in another variable.
- Print the mean (average) of the given list items.
- The Exit of the Program.

**Below is the implementation:**

# Import statistics module using the import keyword. import statistics # Give the list as user input using list(),map(),input(),and split() functions. # Store it in a variable. gvn_lst = list(map(int, input( 'Enter some random List Elements separated by spaces = ').split())) # Pass the given list as an argument to the statistics.mean() method that # computes the mean (average) of the given list items. # Store it in another variable. rslt = statistics.mean(gvn_lst) # Print the mean (average) of the given list items. print("The mean of the given list items", gvn_lst, " = ", rslt)

**Output:**

Enter some random List Elements separated by spaces = -1 -2 6 7 4 9 The mean of the given list items [-1, -2, 6, 7, 4, 9] = 3.8333333333333335