Coefficient of Variation Calculator in Javascript

Coefficient of variation is represented as the ratio of the standard deviation to the mean . It is also know as unitized risk. This calculator helps to find out the coefficient of variation for set of numbers.

Features

Online statistics tool to compute coefficient of variation for set of data.
This is free javascript calculator.
Fully customizable and mobile friendly calculator.
It works on all modern browsers.

Preview

Coefficient of Variance (CV) Calculator

Downloads

Javascript Code

<html>
<head>
<title>Coefficient of Variation (CV) Calculator in Javascript </title><script type="text/javascript">
function checnum(as)
{var i;var a = as.value;as.value = a.replace(/[^\d,]/g, '');
}
function trimExtraComma(obj)
{var utext =obj.value.trim();
var firstChar = utext.substring(0, utext.length);
if(firstChar == ','){utext = utext.substring(1);}obj.value = utext.replace(/,+(?=,)/g,'');var val=document.getElementById("rvalue").value;var rary=val.split(",");var i;var k=rary.length;
for (i=0; i<k; i++){
if(rary[i].length>10) {
alert("Enter minimum 10 digits");
va='';
document.getElementById("rvalue").value =" ";va.replace(va,'');}}
}
function error()
{var t=document.getElementById("rvalue").value;
if (t!='') {
t = t.replace(" ","");var rarray=t.split(",");var k=rarray.length;
var sum=0;//Mean calculationfor(var c=0; c<k; c++){sum = sum + parseFloat(rarray[c]);}
mean = sum/k;//Variance calculation
var variance=0;var b;var varian;for(var a=0; a<k; a++)
{variance = variance+Math.pow((parseFloat(rarray[a])-mean),2);b = k-1;varian = variance/b;}//Standard Deviation Calculationvar sd=0;sd = Math.sqrt(varian); var coev = Math.round(100000 * (sd / mean)) / 100000;document.getElementById("evalue").value = coev;}
else{alert("Enter values to Calculate!");}
}
function chk(){
var sds = document.getElementById('dum');
if(sds == null){alert("You are using a free package.\n You are not allowed to remove the tag.\n");
document.getElementById("maindiv").style.visibility="hidden";
}
var sdss = document.getElementById("dumdiv");
if(sdss == null){alert("You are using a free package.\n You are not allowed to remove the tag.\n");}
}
window.onload=chk;
</script>
<style>
h2 {border-bottom: 1px solid #ebebeb;color: #474747;font-size: 1.6em;font-weight: normal;line-height: 130%;
}
.frms
{
margin:0 auto;
padding:10px;
-moz-border-radius:.3em;
-webkit-border-radius:.3em;
-o-border-radius:.3em;
font-family:Tahoma, Geneva, sans-serif;
color:#333;
font-size:.9em;
line-height:1.2em;
}
.frms input[type="text"],[type="password"],[type="file"],textarea,select
{
width:99%;
background:#fff;
border:#ddd 1px solid;
border-radius:.35em;
-moz-border-radius:.35em;
-webkit-border-radius:.35em;
-o-border-radius:.35em;
padding:0 .5%;
margin-top:5px;
margin-bottom:15px;
height:35px;
}
.frms input:hover,textarea:hover,select:hover
{
box-shadow:#dae1e5 0px 0px 5px;
-moz-box-shadow:#dae1e5 0px 0px 5px;
-webkit-box-shadow:#dae1e5 0px 0px 5px;
-o-box-shadow:#dae1e5 0px 0px 5px;
}
.frms input:focus,textarea:focus,select:focus
{
-webkit-box-shadow: inset 7px 4px 7px -7px rgba(0,0,0,0.42);
-moz-box-shadow: inset 7px 4px 7px -7px rgba(0,0,0,0.42);
box-shadow: inset 7px 4px 7px -7px rgba(0,0,0,0.42);
border:#9d9983 1px solid;
}
.frms input[type="submit"],input[type="reset"],input[type="button"],button,.yellow_button,.blue_button
{
padding:7px 14px;
font-weight:bold;
color:#fff;
cursor:pointer;
border-radius:.3em;
-moz-border-radius:.2em;
-webkit-border-radius:.2em;
-o-border-radius:.2em;
margin:10px 0;
border:none;
}
.frms input[type="submit"]
{
background:#75ab22;
border-bottom:#629826 3px solid;
text-shadow:#396e12 1px 1px 0px;
}
.frms input[type="reset"]
{
background:#ee765d;
border-bottom:#d95e44 3px solid;
text-shadow:#8c3736 1px 1px 0px;
}
input[type="button"],button,.blue_button
{
background:#468cd2;
border-bottom:#3277bc 3px solid;
text-shadow:#214d73 1px 1px 0px;
}
.frms label
{
font-size:1.2em;
}
.resp_code
{
margin:5px 10px 10px 300px;
padding:10px 20px 10px 20px;
font:normal 1em/1.3em Tahoma, Geneva, sans-serif;
color:#333;
background:#f8f8f8;
border:#ddd 1px solid;
border-radius:.25em;
overflow:auto;width:50%;
}
@media screen and (max-width: 480px)
{
.resp_code
{width:auto !important;margin:0px !important;
}
}
</style>
</head><body><div class='resp_code'>
<div id='maindiv' class='frms'><div align='center'><h2>Coefficient of Variance (CV) Calculator</h2></div>
<form name=first class='frms noborders'>
<div align='left'><label>Enter the set of numbers (separated by comma)</label><input type=text id=rvalue onkeyup='checnum(this),trimExtraComma(this)'> </div> <div align=center> <input type=button value=Calculate onclick=error()> <input type='reset' value=Reset><span align='center' style="font-size: 10px;color: #dadada;" id="dumdiv"><a href="https://www.hscripts.com" id="dum" style="font-size: 10px;color: #dadada;text-decoration:none;color: #dadada;">©h</a></span>
</div>
<div class='result'><div align='left'>
<label>Coefficient of Variation (CV)</label><input type=text id=evalue readonly>
</div>
</div>
</form>
</div>
</div>
</body>
</html>

Release Date - 16-04-2015
Get free version without ©copyright link for just $10/-
For customization of this script or any script development, mail to support@hscripts.com

Usage

Copy and paste the code into your HTML page to use this coefficient of variation calculator.
Enter set of numbers separated by comma and click calculate to find the results.
Copy the calculator code inside the script tag and place it where you need to integrate the Coefficient of Variation Calculator in your web page.