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x/simplestatistics/index.js>addToMean

simple statistics for node & browser javascript
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function addToMean
import { addToMean } from "https://deno.land/x/simplestatistics@v7.7.5/index.js";

When adding a new value to a list, one does not have to necessary recompute the mean of the list in linear time. They can instead use this function to compute the new mean by providing the current mean, the number of elements in the list that produced it and the new value to add.

Examples

addToMean(14, 5, 53); // => 20.5

Parameters

mean

current mean

n

number of items in the list

newValue

the added value