Js statistics bundle Installation npm install --save turf-stater Usage let set = new Set([6, 6, 2, 9, 1, 1, 0]); //or: let set = Set.fromFrequencySet([[6,2],[2,1],[9,1],[1,2],[0,1]); set.getAmount(); //25 set.getLength(); //7 set.getAverage(); //~3.5714 Tests Test with jest: npm run test