Discrete random variables
Discrete random variables
A random variable is a quantity whose value depends on chance. It is discrete if it can only take separate countable values, such as 0,1,2,30, 1, 2, 30,1,2,3.
Step-by-step lessons on Edexcel A Level Maths Statistical Distributions, covering 6.1 Probability Distributions, 6.2 The Binomial Distribution, and 6.3 Cumulative Probabilities. Each one builds up to exam-style questions. Build fluency with the core pure algebra and calculus toolkit early, since almost every mechanics and statistics topic on the course depends on it.