**Mean **is a measure of central tendency that represents the average value of a dataset.

• It is also known as **Arithmetic mean.**

• It is calculated by summing all the values in the dataset and dividing the sum by the total number of values.

**Arithmetic mean may either be:**

- Simple Arithmetic Mean
- Weighted Arithmetic Mean

## Simple Arithmetic Mean:

The Simple Arithmetic Mean, often referred to as just the “mean,” is the most common measure of central tendency that represents the average value of a dataset and is calculated by summing all the values in the dataset and then dividing by the total number of values.

## For Individual Series:

**Direct Method:**