These lessons, with videos, examples and step-by-step solutions, are suitable for A Level Maths students learning
Constructing a Probability Distribution Table
This video shows you how to construct a probability distribution table for a discrete random variable.
Probability from a Discrete Probability Distribution Table
This video shows you how to calculate probabilities from a probability distribution table for a discrete random variable.
If the random variable X has the following distribution
P(X > 3)
P(X < 2.5)
P(X < 6)
Probability : Cumulative Distribution Function F(X)
This tutorial shows you the meaning of this function and how to use it to calculate probabilities and construct a probability distribution table from it.
Cumulative Probability Function F(X)
F(x) = P(X) ≤ x)
If the random variable X has the following probability distribution the fimd F(3)
If F(1) = 0.2, F(2) = 0.9 and F(3) = 1 for a random variable X.
Construct a probability distribution table for X.
A-Level Edexcel GCE Statistics S1 Advanced/Advanced Subsidiary
January 2008 Q7 (Probability)
Tetrahedral dice have four faces. Two fair tetrahedral dice, one red and one blue, have faces numbered 0, 1, 2, and 3 respectively. The dice are rolled and the numbers face down on the two dice are recorded. The random variable R is the score on the red die and the random variable B is the score on the blue die.
(a) Find P(R=3 and B=0).
The random variable T is R multiplied by B.
(b) Complete the diagram to represent the sample space that shows all the possible
values of T.
(c) The table represents the probability distribution of the random variable T. Find the values of a, b, c and d.
Find the values of
7(b)(c) Probability Distribution Table
7(d) Find E(X)
7(e) Find Var(X)
Try the free Mathway calculator and
problem solver below to practice various math topics. Try the given examples, or type in your own
problem and check your answer with the step-by-step explanations.
We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.