Year 11 probability quiz to download as PDF

This Year 11 probability quiz has 10 short questions for pupils aged 15-16. Type your answer, check it straight away and read the explanation when you get one wrong.

Year 11 probability quiz: the 10 questions

P(A) = 0.3. Find P(not A).
How many outcomes for two dice?
P(head) = 0.5. Expected heads in 40 tosses?
P(A)=0.5, P(B)=0.2, independent. P(A and B)?
What do the probabilities of all outcomes add to?
A bag has 4 red and 6 blue. P(red)?
Fraction of the 36 outcomes giving a double with two dice?
Relative frequency = number of successes / ?
A tree diagram: you add or multiply for 'and'?
In a class of 25, 10 like A, 8 like B, 3 like both. How many like neither?

How to use this Year 11 probability quiz

First, answer every question without a calculator unless the question says so. Then check your answer and read the short explanation. If you get fewer than 7 right, revise the probability: experiments, Venn and tree diagrams lesson and try again later. After that, try the multiple choice questions or the probability: experiments, Venn and tree diagrams worksheet.

Finally, take this quiz again before a test, because quick retrieval helps you remember. Moreover, all the pages of this chapter work together, so you can move between them at any time. For example, many pupils read the lesson on Monday, practise on Wednesday and test themselves on Friday.