# statistics

From Noah.org

## Use the Geometric Mean

To average normalized data use the **Geometric Mean**. Do not use the **Arithmetic Mean** to average normalized data.
The **Geometric Mean** of **n** numbers is the product of the numbers to the 1/n^{th} power.

GM = (N_{1} * N_{2} * ... * N_{n}) ^{(1/n)}

(^{n}∏_{i=1} a_{i} ) ^{(1/n)}