diff --git a/src/multivariateanalysis.rst b/src/multivariateanalysis.rst
index 860a908..d8dce27 100644
--- a/src/multivariateanalysis.rst
+++ b/src/multivariateanalysis.rst
@@ -313,7 +313,7 @@ just the cultivar 2 samples:
       12.278732   1.932676   2.244789  20.238028  94.549296   2.258873   2.080845 
         V9        V10        V11        V12        V13        V14 
       0.363662   1.630282   3.086620   1.056282   2.785352 519.507042 
-    > sapply(cultivar2wine[2:14]) 
+    > sapply(cultivar2wine[2:14],sd)
         V2          V3          V4          V5          V6          V7          V8 
       0.5379642   1.0155687   0.3154673   3.3497704  16.7534975   0.5453611   0.7057008 
         V9         V10         V11         V12         V13         V14