Probability distributions GCSE Statistics Probability distributions

A probability distribution is often shown in table form. 12 May 2019 A probability distribution is a list of all the possible outcomes of an event together with their probabilities. It should be remembered that all the probabilities add together to make 1. A probability distribution is often shown in table form. The probability distribution for a biased die might be: Outcome (x) 1 2 3 4 5 6 Probability p(x) 1 6 1 12 k since all the probabilities add together to make 1 we can find k k = 1 −( 1 6 + 1 6 + 1 12 + 1 12 ) 2 = 1 4 P( throwing 4 or 5) = 1 12 + 1 4 = 1 3

Your turn Exercise 8A page 295