Index: trunk/Ohana/src/opihi/cmd.data/vstats.c
===================================================================
--- trunk/Ohana/src/opihi/cmd.data/vstats.c	(revision 32632)
+++ trunk/Ohana/src/opihi/cmd.data/vstats.c	(revision 33963)
@@ -144,5 +144,5 @@
       }      
     }
-    stdev = sqrt (var / N);
+    stdev = sqrt (var / (N - 1));
 
     Nmode = 0;