text: import matplotlib.pyplot as plt
  import seaborn as sns
  
  list_x_mean = []
  for i in range(50):
      x = np.random.normal(size = 100)
      x_mean = x.mean()
      list_x_mean.append(x_mean)
  
  plt.subplot(121)
  sns.distplot(x)
  plt.xlim(-5,5)
  plt.subplot(122)
  sns.distplot(list_x_mean)
  plt.xlim(-5,5)
  plt.show()
  