Weighted average
Lines of value and weight.
Calculator
How to use
Weights
Non-negative weights.
Educational use only. For assessments, show reasoning and check boundary cases.
Lines of value and weight.
Non-negative weights.
Educational use only. For assessments, show reasoning and check boundary cases.
Model / formula
Σ(x·w)/Σw
One pair per line: value then weight.
Result
Weighted mean = 81.000000