In [14]:

    

import numpy as np
import matplotlib.pyplot as plt


    

In [15]:

    

a = np.array([[1, 2], [3, 4]])


    

In [16]:

    

np.std(a)


    

    
Out[16]:





1.118033988749895

In [17]:

    

np.mean(a)


    

    
Out[17]:





2.5

In [22]:

    

plt.plot(a)


    

    
Out[22]:





[<matplotlib.lines.Line2D at 0x7f2b22eab7f0>,
 <matplotlib.lines.Line2D at 0x7f2b22eab978>]






    

In [ ]:

    




    

In [18]:

    

b = ([1,2,3,4,5,6,4,5,6,4,5,6,4,5,6,4,5,6,4,5,6,4,5,6,4,5,6,4,5,6,4,5,6,4,5,6,4,5,6,7,8,9])


    

In [19]:

    

np.mean(b)


    

    
Out[19]:





5.0

In [20]:

    

np.std(b)


    

    
Out[20]:





1.3972762620115438

In [21]:

    

plt.plot(b)


    

    
Out[21]:





[<matplotlib.lines.Line2D at 0x7f2b22f3cba8>]