Maths & numbers
Weighted average
Calculate an average with a different weight for each value.
A clear answer. Here’s how.
Weighted mean = Σ(value × weight) / Σ(weight). Lists must have the same length, weights must be non-negative and at least one must be positive. Weights need not add up to 100.
See a worked example
Worked example
A fixed demonstration, separate from the values you enter above.
- Values (commas or new lines)
- 80, 90, 70
- Matching weights
- 2, 3, 1
Example result
- Weighted average
- 83.3333333333
- Total weight
- 6
- Items
- 3