Fix rolling mean example code in Statistics docs
@@ -209,7 +209,7 @@ mean = StatUtils.mean(values, 0, 3);
<dd>Use a <code>DescriptiveStatistics</code> instance with
window size set to 100
<source>
-// Create a DescriptiveStats instance and set the window size to 100
+// Create a DescriptiveStatistics instance and set the window size to 100
DescriptiveStatistics stats = new DescriptiveStatistics();
stats.setWindowSize(100);
@@ -219,6 +219,7 @@ stats.setWindowSize(100);
long nLines = 0;
while (line != null) {
line = in.readLine();
+ nLines++;
stats.addValue(Double.parseDouble(line.trim()));
if (nLines == 100) {
nLines = 0;
