Summary  
This chapter explains how to calculate the arithmetic mean of a numeric dataset by summing all values and dividing by the total count.

General domain of usage  
Statistical data analysis.

The exploration of statistical measures begins with the concept of the **mean value**. To calculate the **mean**, we add up all the numbers in the sequence of data and then divide by the total number of values.

Take a look at the illustration where the calculation of the **mean** salary of people is shown:

This course gives you a basic knowledge of statistics. It is intended for students with basic knowledge of Python syntax as they will be working with NumPy and pandas modules. During the course, you will become familiar with the basic concepts and then gradually move on to more complex concepts and tasks.

This section will help us deal with the first real statistical case: finding confidence intervals. It requires knowledge of NumPy, pandas, Matplotlib, and Seaborn library to calculate math formulas and build visualization! To encourage you to pass this section, I want to point out that you will run across a small amount of theory but a significant amount of practice!

An inseparable part of a data analyst's life is conducting hypothesis testing. After completing this section, you will understand the idea behind testing in statistics and will be able to conduct a t-test using Python.

Mean Value

Awesome!

Mean Value