title: Python:numpy - what is loc, scl, parameter?
body: <p><code>loc =</code> ....
  <code>scl =</code> ...</p>
  
  <p><code>normdist = np.random.normal(loc = loc, scale = scl, size = 20)</code></p>
  
  <p>What purpose does loc, scl serve? </p>
  
  <p><code>sampledist = np.random.exponential(scale = parameter, size = sample_size)</code></p>
  
  <p>What does the parameter size represent? </p>