It's impossible to pinpoint a single inventor of the arithmetic mean. The concept of averaging has been used for centuries across various cultures.
Early Uses:
- Ancient Greeks: The Pythagoreans (around 280 BC) used the arithmetic mean in the context of music and proportion.
- Ancient India: The weighted arithmetic mean was used in ancient India, as documented by the mathematician Brahmagupta (598-668 AD).
Modern Usage:
- Adolphe Quetelet (1796-1874) popularized the use of the arithmetic mean in the 19th century, applying it to various social and scientific phenomena.
- The concept of the average (including arithmetic mean) is crucial in many fields, including economics, medicine, and various sciences.
The concept of averaging has evolved and been refined over time, with numerous contributions from mathematicians and statisticians. It's a fundamental tool in understanding data and making sense of the world around us.