PYTHON

plt hist random normal distribution

# Implementation of matplotlib function
import matplotlib
import numpy as np
import matplotlib.pyplot as plt
   
np.random.seed(10**7)
mu = 121 
sigma = 21
x = mu + sigma * np.random.randn(1000)
   
num_bins = 100
   
n, bins, patches = plt.hist(x, num_bins, 
                            density = 1, 
                            color ='green',
                            alpha = 0.7)
   
y = ((1 / (np.sqrt(2 * np.pi) * sigma)) *
     np.exp(-0.5 * (1 / sigma * (bins - mu))**2))
  
plt.plot(bins, y, '--', color ='black')
  
plt.xlabel('X-Axis')
plt.ylabel('Y-Axis')
  
plt.title('matplotlib.pyplot.hist() function Example

',
          fontweight ="bold")
  
plt.show()