Weighted mean

Weighted means allow a more convenient way to average, when the many of the observed values repeat. Instead of the raw data, the data is organized in count by value. See the spreadsheet video or the spreadsheet from more details.

$$ \bar{x} = \frac{\sum_{i=1}^{n} x_{i} w_{i}}{\sum_{i=1}^{n} w_{i}}$$

Example Spreadsheet

Weighted mean example spreadsheet

Creative Commons License
Natural Resources Biometrics by David R. Larsen is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License .

Author: Dr. David R. Larsen
Created: August 12, 2010
Last Updated: December 12, 2019