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fix(guide) add stubs, update spellings and prepare for move (#36531)

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* fix(guide) add stubs and correct file path misspellings and pr… (#36528)

* fix: corrected file path to match curriculum

* fix: renamed to newer challenge name

* fix: added solutions to articles from challenge files

* fix: added missing .english to file name

* fix: added missing title to guide article

* fix: correct solution for guide article

* fix: replaced stub with hint

* fix: added space in Hint headers

* fix: added solution to guide article

* fix: added solution to guide article

* test: replaced stub with hint and solution

* fix: add Problem number: to title

* fix: changed generatorexponential to correct name

* fix: renamed knight's tour to knights-tour

* fix: updated guide article
This commit is contained in:
mrugesh
2019-07-30 00:25:58 +05:30
committed by GitHub
parent e23c80a021
commit 91df817cfe
89 changed files with 3074 additions and 129 deletions
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26
guide/english/certifications/coding-interview-prep/rosetta-code/cumulative-standard-deviation/index.md Normal file
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---
title: Cumulative standard deviation
---
# Cumulative standard deviation
---
## Solutions
<details><summary>Solution 1 (Click to Show/Hide)</summary>
```javascript
function standardDeviation(arr) {
var sum = 0,
sum_sq = 0,
n = arr.length;
arr.forEach(function(e) {
sum += e;
sum_sq += e * e;
})
var std_dev=Math.sqrt((sum_sq / n) - Math.pow(sum / n, 2))
return Math.round(std_dev*1000)/1000;
}
```
</details>