Statistical Distributions

AS Level 

  • Understand and use simple, discrete probability distributions (calculation of mean and variance of discrete random variables is excluded), including the binomial distribution, as a model
  • Calculate probabilities using the binomial distribution

A Level

  • Understand and use the Normal distribution as a model; find probabilities using the Normal distribution
  • Link to histograms, mean, standard deviation, points of inflection and the binomial distribution
  • Select an appropriate probability distribution for a context, with appropriate reasoning, including recognising when the binomial or Normal model may not be appropriate