hourlyAverage.js

const getEntryEveryMinutes = 5;
const randomNumber = (min, max) => {
    return Math.floor(Math.random() * (max - min) + min);
};
const myArray = [];
setInterval(() => {
    myArray.push(randomNumber(1,100));
    if (myArray.length == 13) myArray.shift();
    let total = 0;
    for (let i = 0; i < myArray.length; i++){
        total = total + myArray[i];
    }
    const avg = Math.round(total / myArray.length);
    console.log(`Running average is ${avg}. Number of items in array ${myArray.length}`);

}, getEntryEveryMinutes*60*1000);