Group (average) values from two arrays
<p>I have 2 arrays with the following data:</p>

<pre><code>Array1 = [A, A, A, A, B, B, B, C, C, C, C, C];    
Array2 = [4, 2, 4, 6, 3, 9, 6, 5, 4, 6, 2, 8];
</code></pre>

<p>I want to create 2 new arrays from these values:</p>

<pre><code>Array3 = [A, B, C];    
Array4 = [4, 6, 5];
</code></pre>

<p>The values in Array 4 are the averages from Array2.</p>

<p>How should the javascript or jquery code look like to create Array3 and Array4?</p>

<p>edit:</p>

<p>I would like to group the values like this:</p>

<pre><code>Array1      Array2
  A           2
  A           4
------------------
  B           2
  B           6
------------------
  C           3
  C           6
  C           9

     result:

Array3      Array4
  A           3          Average from 2 and 4
  B           4          Avarage from 2 and 6
  C           6          Average from 3, 6 and 9
</code></pre>
