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sympy.stats.variance() function in Python

  • Last Updated : 01 Jun, 2020

In mathematics, the variance is the way to check the difference between the actual value and any random input, i.e variance can be calculated as a squared difference of these two values. With the help of sympy.stats.variance() method, we can calculate the value of variance by using this method.

Syntax : sympy.stats.variance(value)

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Return : Return the value of variance.



Example #1 :
In this example we can see that by using sympy.stats.variance() method, we are able to calculate the value of variance using this method.




# Import Sympy and variance
from sympy.stats import P, variance, Die
  
X, Y = Die('X', 5), Die('Y', 3)
  
# Using stats.variance() method
gfg = variance(X + Y)
  
print(gfg)

Output :

8/3

Example #2 :




# Import Sympy and variance
from sympy.stats import P, variance, Die
  
X, Y = Die('X', 2), Die('Y', 4)
  
# Using stats.variance() method
gfg = variance(X * Y)
  
print(gfg)

Output :

75/16
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