diff --git a/likelihood/exercises/mlestd.out b/likelihood/exercises/mlestd.out
new file mode 100644
index 0000000..947a8cd
--- /dev/null
+++ b/likelihood/exercises/mlestd.out
@@ -0,0 +1,11 @@
+n=50
+                                mean 3.189
+                  standard deviation 1.953
+      likelihood: standard deviation 1.953
+  log-likelihood: standard deviation 1.953
+
+n=1000
+                                mean 3.094
+                  standard deviation 1.995
+      likelihood: standard deviation 1.000
+  log-likelihood: standard deviation 1.995