Fixed error in statistics function, added statistics button and added resources (image of device)

data/index.html

@@ -106,14 +106,18 @@
 			}
 			
 			function calcStatistics(){
-				var array = document.getElementById("results").value.split(",");
-				if(array.length == 0) return;
-				
+				var array = document.getElementById("results").value.split(",").map(function(num) {
+					return parseInt(num);
+				}).filter(function(num) {return !isNaN(num);});
+				if(array.length < 2){
+					document.getElementById("statistics").innerHTML = "";
+				} else {
 					document.getElementById("statistics").innerHTML = ""
-					 + "Mean: " + mean(array) + "<br />"
+						 + "Mean: " + mean(array).toFixed(2) + "<br />"
 						 + "Median: " + median(array) + "<br />"
-					 + "Variance: " + variance(array) + "<br />"
-					 + "StandardDeviation: " + standardDeviation(array);
+						 + "Variance: " + variance(array).toFixed(2) + "<br />"
+						 + "StandardDeviation: " + standardDeviation(array).toFixed(2);
+				}
 			}
 			
 			document.onload = function(){
@@ -155,6 +159,7 @@
 				<div class="button" style="background-color: #dc3545;" onclick="makeRequest('abort')">Abort!</div>
 			</div>
 			<div class="box niceBorder"><div class="button" onclick="getResults()">Get Results!</div></div>
+			<div class="box niceBorder"><div class="button" onclick="calcStatistics()">Statistics!</div></div>
 		</div>
 	</body>
 </html>
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