Histogram

import numpy as np
import matplotlib.pyplot as plt

np.random.seed(13)
arr_data = np.random.normal(0,1, 100)

yhist, binedges = np.histogram(arr_data)

bincenters = np.mean(np.vstack([binedges[0:-1],binedges[1:]]), axis=0)
plt.bar(bincenters, yhist)