Python Program to Calculate Average of N Numbers

How to Calculate the Average

The average (also known as the arithmetic mean) of a set of numbers is calculated by summing all the numbers and then dividing by the count of numbers. The formula is:

For example, if you have the numbers 4, 7, 12, and 15:

1. Sum the numbers: 4 + 7 + 12 + 15 = 38
2. Count the numbers: There are 4 numbers
3. Calculate the average: 38 / 4 = 9.5

The average of these numbers is 9.5. This method works for any set of numbers, regardless of how many there are.

Python Program to Calculate Average

Here's a complete Python program that calculates the average of N numbers:

# Python program to calculate average of N numbers
def calculate_average():
    # Get input from user
    numbers = input("Enter numbers separated by spaces: ")

    # Convert input string to list of floats
    num_list = [float(num) for num in numbers.split()]

    # Calculate average
    average = sum(num_list) / len(num_list)

    # Display result
    print(f"The average of the numbers is: {average:.2f}")

# Run the program
calculate_average()

How the Program Works

1. The program prompts the user to enter numbers separated by spaces.
2. It converts the input string into a list of floating-point numbers.
3. It calculates the average using the formula: sum of numbers divided by count of numbers.
4. The result is displayed with 2 decimal places for readability.

You can modify this program to accept input from a file or other data source as needed.

Example Calculation

Let's walk through an example calculation using the numbers 10, 20, 30, and 40.

Here's how the calculation works:

1. Sum: 10 + 20 + 30 + 40 = 100
2. Count: 4 numbers
3. Average: 100 / 4 = 25.00

This shows that the average of these four numbers is 25.00.