What Is the Arithmetic Mean?

Arithmetic mean, also known as mean, is the most basic and commonly used type of average index in statistics. It is divided into simple arithmetic mean and weighted arithmetic mean. It is mainly suitable for numerical data, not for quality data. According to the different forms of expression, the arithmetic mean has different calculation forms and calculation formulas.

1. The weighted arithmetic mean is affected by two factors at the same time, one is the size of each group of values, and the other is the distribution of each group

The arithmetic mean is a good centralized quantity, which has the advantages of sensitive response, rigorous determination, concise and easy solution, simple calculation, suitable for further calculation, and less affected by sampling changes.

Arithmetic mean is susceptible to extreme data. This is because the mean response is sensitive, and large or small changes in each data will affect the final result. ^[1]