Fixed expression to Variance.

noamoss · Jul 12, 2014 · 9c0027a · 9c0027a
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commit 9c0027a
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diff --git a/06_StatisticalInference/homework/hw1.Rmd b/06_StatisticalInference/homework/hw1.Rmd
@@ -179,7 +179,7 @@ What is the variance expressed to 1 decimal place?
 4. 17.0
 
 *** .hint
-The variance is $E[X^2] - E[X^2]$
+The variance is $E[X^2] - E[X]^2$
 
 *** .explanation 
 ```{r}