Created By : Vaibhavi Kumari
Reviewed By : Phani Ponnapalli
Last Updated : Mar 21, 2023


Take advantage of this free Cumulative Probability Calculator tool to compute the chances of occurring two or more events. We can use this calculator by entering the inputs in the below input fields and gently tap the calculate button to get the answers quickly.

Class Array
Frequency Array

What is Cumulative Probability ?

In probability theory, if the value of the random variables is within the range then the chance of the value is called cumulative probability. In simple words, it is a measure of the chance that two or more events. Let us see the formula notation for cumulative probability.

F(x)= P(X<=x)

Here, X is the discrete random variable.

F(x) is the cumulative probability.

And also cumulative probability is determined as F(x) = f(0) +f(1)+....+f(x)

Steps to Find the Cumulative Probability

Below are the guidelines to follow for calculating the cumulative probability.

  • Note the following data that are given in the problem.
  • And, then apply the cumulative probability formula, F(x) = f(0) +f(1)+....+f(x).
  • Finally, simplify and find the answer.

How to Calculate Cumulative Probability ?

Check out the below-solved example to improve your skills on how to find the cumulative probability manually by hand.

Example: Calculate the cumulative probability of a coin?

Solution:

In a coin we have 1 head and 1 tail.

Probability of head = 1/2 = 0.25.

Probability of tail = 1/2 = 0.25.

Cumulative probability, F(x)= P(X<=x) = f(0)+f(1).

F(2) = f(1) +f(2) = 0.25+0.25 = 1.

Therefore, the cumulative probability of a coin is 1.

Know more about the concepts of probability calculators that are available at probabilitycalculator.guru.

FAQs on Cumulative Probability Calculator

1. How do you find the cumulative probability?

Cumulative probability in simple words, just you need to multiply the probability of events together. i.e. f(x) = f(0)+f(1)+...+f(n).


2. How do you find the cumulative probability on the calculator?

  • First, insert the values in the given input boxes.
  • Then, press the 'Calculate' button available below the input boxes.
  • Finally, you will get the answer in split second.

3. What is the best tool to calculate the cumulative probability?

A cumulative probability calculator is the best tool that is available at probabilitycalculator.guru