We will develop a program on how to find the average of n numbers in Python. The average is defined as the mean value which is equal to the ratio of the sum of the number of a given set of values to the total number of values present in the set. Here, we will calculate the average of n numbers using various methods.

**How to find the average of numbers:**

**Average Formula** = Total sum of all numbers / Number of item in the set

Average = (x_{1}+x_{2}+x_{3}+…+x_{n})/n

**Mathematically,**

Inputs: a=2, b=4, c=8, d=2

Average = (a+b+c+d)/4 = (2+4+8+2)/4 = 16/4 = 4

Now let’s see how we can calculate average of n numbers in Python.

## Average in Python using For Loop

This Python program is the simplest and easiest way to calculate the average of N number. First, we defined the total number we want to enter in inputs. Then, we will take numbers and **calculate the total sum of those numbers using the For Loop**. Finally, calculate the average of those numbers using a formula and print the average value.

```
# Python program to find the average of n numbers
# total number you want to enter
n = int(input('How many numbers: '))
# denotes total sum of n numbers
total_sum = 0
for i in range (n):
# take inputs
num = float(input('Enter number: '))
# calculate total sum of numbers
total_sum += num
# calculate average of numbers
avg = total_sum / n
# print average value
print('The average value of numbers = %0.2f' %avg)
```

Output for the different input values:-

How many numbers: 3

Enter number: 10

Enter number: 15

Enter number: 12

The average value of numbers = 12.33

How many numbers: 5

Enter number: 23

Enter number: 20

Enter number: 34

Enter number: 50

Enter number: 29

The average value of numbers = 31.20

## Python Program to Find Average of N Numbers using While Loop

In the previous program, we used for loop to calculate average but in this program, we are using the **While Loop** to find the average of n numbers.

```
# Python program to find the average of n numbers
# total number you want to enter
n = float(input('How many numbers: '))
total_sum = 0
i =1
while i <= n:
num = float(input('Enter number: '))
total_sum += num
i = i+1
# calculate average of numbers
avg = total_sum / n
# print average value
print('The average of numbers = %0.2f' %avg)
```

Output:-

How many numbers: 2

Enter number: 10

Enter number: 20

The average of numbers = 15.00

## Program to Find Average of N Numbers in Python

This python program also performs the same task but with different methods. In this program, we can also take the help of a **function to find the average of n numbers in python**. A function is a block of code that performs a specific task.

```
# Python program to find the average of n numbers
def avg(arr, x): #user-defined function
sum = 0
for i in range(n):
# calculate total sum of numbers
sum = sum+arr[i]
# calculate average of numbers
avg = sum/x
return avg
# total number you want to enter
n = int(input('How many numbers: '))
# take inputs
num = []
for i in range(n):
num.append(float(input('Enter number: ')))
# calling function and print average value
print('The average value of numbers = %0.2f' %avg(num, n))
```

Output:-

How many numbers: 4

Enter number: 12

Enter number: 20.5

Enter number: 46

Enter number: 35.39

The average value of numbers = 28.47

Also See:- How to find the average of 3 numbers in Python

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