Merge pull request bcaffo#31 from Entodi/master

Fixed expression to Variance.
noamoss · Jul 14, 2014 · c076601 · c076601
2 parents 3398a7e + 4b365bc
commit c076601
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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}

diff --git a/06_StatisticalInference/homework/hw1.html b/06_StatisticalInference/homework/hw1.html
@@ -333,7 +333,7 @@ <h2>About these slides</h2>
  <button class="quiz-clear btn btn-danger">Clear</button>
 
  <div class="quiz-hint">
- <p>The variance is \(E[X^2] - E[X^2]\)</p>
+ <p>The variance is \(E[X^2] - E[X]^2\)</p>
 
 </div>
 <div class="quiz-explanation">
@@ -447,4 +447,4 @@ <h2>About these slides</h2>
  <script>hljs.initHighlightingOnLoad();</script>
  <!-- DONE LOADING HIGHLIGHTER JS FILES -->
 
- </html>
+ </html>
diff --git a/06_StatisticalInference/homework/hw1.md b/06_StatisticalInference/homework/hw1.md
@@ -185,7 +185,7 @@ 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