Goulib.stats

very basic statistics functions



In [1]:

    
from Goulib.notebook import *
from Goulib.stats import *

Discrete distributions



In [2]:

    
dice=Discrete(range(1,6+1))
dice









    Out[2]:





Discrete(mean=3.5, var=3.5)



In [3]:

    
Y=Discrete({1:0.2, -1:0.8})
Y









    Out[3]:





Discrete(mean=-0.6, var=2)



In [9]:

    
X=Discrete({-2:0.15,-1:.2,0:.3,1:.2,2:.15})
X**2+Y









    Out[9]:





Stats(mean=-0.3, var=8.640625)



In [5]:

    
n1=Normal()
print(n1)
n1









    



Normal(mean=0, var=1)






    Out[5]:




$\mathcal{N}(\mu=0, \sigma=1)$



In [6]:

    
n2=Normal([],4,4)
n2









    Out[6]:




$\mathcal{N}(\mu=4, \sigma=2)$



In [7]:

    
n1+n2









    Out[7]:




$\mathcal{N}(\mu=4, \sigma=\sqrt {5})$



In [8]:

    
plot.plot([n1,n2,n1+n2])









    Out[8]: