Python | Binomial Experiment Simulation

Python | Binomial Experiment Simulation: In this tutorial, we are going to learn about the binomial experiment simulation and its python implementation.
Submitted by Anuj Singh, on July 09, 2020

A binomial experiment is described by the following characteristics:

  • An experiment that involves repeated trials.
  • Each trial can only have two possible outcomes i.e. success or failure.
  • The likelihood of a particular outcome will occur on any given trial that remains constant throughout the experiment.
  • All of the trials are independent of the experiment.

An experiment of a series of coin tosses is a perfect example of a binomial experiment. In this article, we are going to simulate a binomial experiment using an inbuilt function numpy.random.binomial(). This NumPy library function returns a vector containing the number of positive outcomes in n number of trials.

Probability of positive outcome: 0.2

Following is the python code for demonstration and plotting Probability Distribution of Simulation Binomial Process:

import numpy as np
import matplotlib.pyplot as plt 

n = 100
p = 0.2
x = np.random.binomial(n,p,size = 19)

kk = 0
kr = []
l = 0

for i in range(50):
    n = 100
    kk = 0
    for h in range(100):
        # j.append(np.random.binomial(i,p))
        jj = np.random.binomial(n,p)
        if jj >= i:
            kk = kk + 1
    kr.append(kk*(100-kk)/10000)                            
# it is number of head
# find the probability of number of head

print(kr)

plt.plot(kr)
plt.xlabel('Number of Positive Outcomes',fontsize=14)
plt.ylabel('Probability',fontsize=14)

Output:

Python | Binomial Experiment Simulation | Output







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