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random.betavariate() method in Python

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  • Last Updated : 17 May, 2020
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betavariate() is an inbuilt method of the random module. It is used to return a random floating point number with beta distribution. The returned value is between 0 and 1.

Syntax : random.betavariate(alpha, beta)

Parameters :
alpha : greater than 0
beta : greater than 0

Returns : a random beta distribution floating number between 0 and 1

Example 1:




# import the random module
import random
  
# determining the values of the parameters
alpha = 5
beta = 10
  
# using the betavariate() method
print(random.betavariate(alpha, beta))

Output :

0.5148685287422776

Example 2: We can generate the number multiple times and plot a graph to observe the beta distribution.




# import the required libraries
import random
import matplotlib.pyplot as plt
  
  
# store the random numbers in a 
# list
nums = []
low = 10
high = 100
mode = 20
  
for i in range(100):
    temp = random.betavariate(5, 10)
    nums.append(temp)
      
# plotting a graph
plt.plot(nums)
plt.show()

Output :

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