Suppose an array consists numbers only. We want to calculate the average value of all the numbers in the array that are greater than a particular value. Lets see how can we achieve this using Javascript.

Example

Suppose we want to calculate the average value of all the numbers that are greater than 20.

In the following, numlist array contains numbers.

Our first job would be to filter out all the numbers that are greater than 20 and form a new array. Then we can easily calculate the average value.

<script type="text/javascript">
var numlist=[5,10,15,20,25,30,35,40];
var newNumList=numlist.filter(element => element > 20);
//newNumList contains all the values that are greater than 20.
//calculate the average
var totalSum=0;
for(var iNum=0;iNum<newNumList.length;iNum++){
totalSum+=newNumList[iNum];
}
var averageSum=totalSum/newNumList.length;
console.log(averageSum);
</script>
How to obtain average value of all the elements that are greater than a particular value in an Array (Javascript)? Reviewed by Pixel Stream on December 17, 2019 Rating: 5