Created
September 9, 2018 04:35
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Weighted mean (average) in Javascript ES6
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| const sumArrayValues = (values) => { | |
| return values.reduce((p, c) => p + c, 0) | |
| } | |
| const weightedMean = (factorsArray, weightsArray) => { | |
| return sumArrayValues(factorsArray.map((factor, index) => factor * weightsArray[index])) / sumArrayValues(weightsArray) | |
| } | |
| weightedMean([251, 360, 210], [0.1, 0.5, 0.7]); | |
| // => 270.8461538461539 |
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