Probstat/coin toss experiments

One coin toss simulation

In this part, we will perform a few simulations on coin tosses. Below are example codes for generating random numbers in Java and Python. You can definitely use other languages.

Some code

The following is a Java code for randomly tossing a fair coin for 100 times.

import java.util.Random;

public class CoinToss {

  public static void main(String[] args) {
    Random random = new Random();
    
    int N = 100;
    int c = 0;
    
    for (int i = 0; i < N; i++) {
      boolean head = random.nextDouble() >= 0.5;
      if (head) {
        c++;
      }
    }
    System.out.println("Heads: " + c);
    System.out.println("Freq/N: " + ((double) c)/N);    
  }
}

And this is an equivalent one in Python.

import random

N = 100
c = 0
for i in range(N):
    head = random.random() >= 0.5
    if head:
        c += 1

print "Heads:",c
print "Freq/N:",float(c)/N