title: plot normal distribution given mean and sigma - python
body: <p>I have some data in pandas dataframe</p>
  
  <pre><code>df['Difference'] = df.Congruent.values - df.Incongruent.values
  mean = df.Difference.mean()
  std = df.Difference.std(ddof=1)
  median = df.Difference.median()
  mode = df.Difference.mode()
  </code></pre>
  
  <p>and I want to plot a histogram together with normal distribution in 1 plot. Is there a plotting function that takes mean and sigma as arguments? I don't care whether  it is matplotplib, seaborn or ggplot. The best would be if I could mark also mode and median of the data all within 1 plot.</p>