title: Average values in two Numpy arrays
body: <p>Given two ndarrays</p>
  
  <pre><code>old_set = [[0, 1], [4, 5]]
  new_set = [[2, 7], [0, 1]]
  </code></pre>
  
  <p>I'm looking to get the mean of the respective values between the two arrays so that the data ends up something like:</p>
  
  <pre><code>end_data = [[1, 4], [2, 3]]
  </code></pre>
  
  <p>basically it would apply something like </p>
  
  <pre><code>for i in len(old_set):
      end_data[i] = (old_set[i]+new_set[i])/2
  </code></pre>
  
  <p>But I'm unsure what syntax to use.. Thanks for the help in advance!</p>