Average Calculator (Mean, Median, Mode)
Calculate mean, median, mode, range and weighted average from a list of numbers.
Formula
mean = Σx / n · weighted mean = Σ(w·x) / Σw
Tips
- The mean is pulled by outliers; the median is not. A large gap between them means the data is skewed.
- Use the geometric mean for growth rates and the harmonic mean for averaging rates such as speed.
- Weighted averages need one weight per value — module credits, portfolio sizes, or however you are weighting.
Frequently asked questions
Which average should I use?
Mean for symmetric data, median when there are outliers or the distribution is skewed, and mode for categories. Reporting the mean of house prices without the median is a classic way to mislead.