MathematicsCode 9709
Discrete random variables
What this topic asks you to be able to do
- draw up a table showing the probability distribution of a discrete random variable X in a given situation, and find E(X) and Var(X)
- apply the probability formulae for binomial and geometric distributions, and recognise real situations for which these distributions make suitable models
- apply the formulae that give the expectation and variance of a binomial distribution, along with the expectation of a geometric distribution