Redondear decimales
let arr = [1,2,3,4,5];
let average = Math.round((arr.reduce((a,b) => a + b) / arr.length) * 10) / 10; //1 decimal
let average = Math.round((arr.reduce((a,b) => a + b) / arr.length) * 100) / 100; //2 decimalslet arr = [1,2,3,4,5];
let average = Math.round((arr.reduce((a,b) => a + b) / arr.length) * 10) / 10; //1 decimal
let average = Math.round((arr.reduce((a,b) => a + b) / arr.length) * 100) / 100; //2 decimals