# JavaScript: Mean of all digits of a number

## JavaScript Math: Exercise-82 with Solution

Write a JavaScript program to calculate the mean of all the digits of a given number.

What is a Mean?

In mathematics, the mean represents the simple average of two or more numbers. There are several methods available for computing the mean of a set of numbers, including the arithmetic mean method, which uses the sum of the numbers in the series, and the geometric mean method, which is the average of a set of products.

**Test Data:**

(11) -> 1

(66) -> 6

(336) -> 4

(444) -> 4

(1151) -> 2

**Sample Solution:**

**HTML Code:**

```
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JavaScript program to Mean of all digits of a number</title>
</head>
<body>
</body>
</html>
```

**JavaScript Code:**

```
function test(n) {
let arr_str = String(Math.abs(n)).split('');
return arr_str.reduce((a,b)=>a+Number(b),0)/arr_str.length;
}
n = 11
console.log("n = "+n)
console.log("Mean of all digits of the said number: "+test(n));
n = 66
console.log("n = "+n)
console.log("Mean of all digits of the said number: "+test(n));
n = 336
console.log("n = "+n)
console.log("Mean of all digits of the said number: "+test(n));
n = 444
console.log("n = "+n)
console.log("Mean of all digits of the said number: "+test(n));
n = 1151
console.log("n = "+n)
console.log("Mean of all digits of the said number: "+test(n));
```

Sample Output:

n = 11 Mean of all digits of the said number: 1 n = 66 Mean of all digits of the said number: 6 n = 336 Mean of all digits of the said number: 4 n = 444 Mean of all digits of the said number: 4 n = 1151 Mean of all digits of the said number: 2

**Flowchart: **

**Live Demo: **

See the Pen javascript-math-exercise-82 by w3resource (@w3resource) on CodePen.

**Improve this sample solution and post your code through Disqus**

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