## Introduction

In mathematics, the term ‘mean’ is a fundamental concept that is used to find the average of a set of numbers. Let’s explore what the mean is and how it is calculated.

## Definition of Mean

The mean, also known as the average, is calculated by adding up all the numbers in a set and then dividing that sum by the total number of values in the set. This process gives you the central value or typical value of a dataset.

## Calculation Formula

The formula to calculate the mean of a set of numbers is: mean = (sum of all values) / (total number of values).

## Example

Let’s take the numbers 5, 10, 15, 20, and 25. The mean of these numbers would be: (5 + 10 + 15 + 20 + 25) / 5 = 15.

## Case Study

In a survey of 100 students, their scores on a math test were recorded. The mean score of the students was found to be 75 out of 100. This information helped the school administration to understand the average performance of the students.

## Importance of Mean

The mean is crucial in various fields, such as statistics, finance, and science. It provides insights into the central tendency of a dataset and helps in making informed decisions based on data analysis.

## Statistics

A study conducted on a sample of 500 employees revealed that the mean salary of the employees was $50,000 per year. This statistic helped the company to determine the average compensation of its workforce.

## Conclusion

The mean is a powerful mathematical tool that allows us to understand the average value of a set of numbers. By calculating the mean, we can gain valuable insights into the underlying data and make informed decisions based on the central tendency of the dataset.