diff --git a/index.html b/index.html
index 5e9ab25..3c6eaa5 100644
--- a/index.html
+++ b/index.html
@@ -7,6 +7,6 @@
     <script src='main.js'></script>
   </head>
   <body>
-    <h1>javascript basics</h1>
+    <h1>javascript basics - problem 2</h1>
   </body>
 </html>
diff --git a/main.js b/main.js
index 15749d1..41c4aa7 100644
--- a/main.js
+++ b/main.js
@@ -22,3 +22,32 @@
 // console.log('The result of a', o, 'b is', result);
 
 // problem 2 : feature
+
+var raw = prompt("Give me three numbers separated by ':'");
+// var raw = "5:6:7"
+var numstr = raw.split(':');
+var numarr = numstr.map(function(num) {
+  return parseFloat(num);
+});
+
+var sum = 0;
+var product = 1;
+var avg = 0;
+var variance = 0;
+var stdev = 0;
+
+for (var i = 0; i<numarr.length; i++) {
+  sum += numarr[i];
+  product *= numarr[i];
+}
+
+
+var n = numarr.length;
+avg = sum/n;
+
+for (var i = 0; i<numarr.length ; i++) {
+  variance += Math.pow((numarr[i]-avg),2);
+}
+stdev =Math.sqrt(variance/n);
+
+console.log("sum",sum,"product",product,"avg",avg,"standard deviation",stdev);
