How it works
Σ(value × weight) ÷ Σweights
Input definitions
- Values
- Plain text; maximum 200,000 characters.
- Corresponding nonnegative weights
- Plain text; maximum 200,000 characters.
A worked example
- Values
- 80, 90
- Corresponding nonnegative weights
- 1, 3
87.5
Assumptions & limits
Uses the stated input units. Results are rounded for display; keep additional precision for subsequent calculations.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-17. Content checked against the stated method and examples. Our verification approach.
Common questions
Why can statistical results differ between tools?
Denominator, interpolation and boundary conventions can differ. Use the method and assumptions on this page to compare the same definition; displayed decimals may also be rounded.
How does the Weighted average tool work?
Σ(value × weight) ÷ Σweights.
What are the assumptions and limits of Weighted average?
Uses the stated input units. Results are rounded for display; keep additional precision for subsequent calculations.