Students can learn what probability is and how to find it. Probability tree diagrams solutions, examples, videos. Each branch is labelled at the end with its outcome and the probability. Probability tree diagrams animated powerpoint independent events dependent events worksheet included pdf gcse higher the demo video shows an accelerated. Alevel edexcel statistics s1 june 2008 q1d probability tree diagrams.
Question 1 question 2 question 3 question 4 question 5 question 6 question 7 question 8 question 9 question 10. The probability that he travels through rhayader and stops for a break is 042. You can see more uses of tree diagrams on conditional probability. Finding probability using tree diagrams and outcome tables chapter 4. Probability, tree diagrams, gcse, differentiated, worksheets. The probability that he walks home from college is 07. Route rhayader 07 hereford stops for a break no yes 41 b. Tree diagrams are particularly useful in probability since they record all possible outcomes in a.
Mar 29, 2017 gcse maths revise probability and tree diagrams. In the following problems, were now shifting to probability tree diagrams that are not in the classic shape. Tree diagrams are a way of showing combinations of two or more events. Updated for the 2012 exam ultimate gcse statistics. The probability that he wins on the penny drop is 0. Vocabulary worksheets preschool worksheets teaching resources gcse math math tutor maths new gcse tree diagram college math. The probability that he gets a lift to college is 04.
The consultant editor is at the very hub of setting and marking gcse mathematics, being chairman of examiners after many years as a chief examiner. Gcse 91 exam question practice probability trees teaching. For daisy, wearing a bracelet and wearing a necklace are independent events. Sample spaces are often represented using tree diagrams or charts. Visit for quick reminder high school gcse mathematics videos. A coin is biased so that it has a 60% chance of landing on heads. Awesome resource for pushing students understanding of using lists, tree diagrams and tables to find the probability of compound events. Useful as a revision activity at the end of a topic on probability tree diagrams or for gcse maths revision. Probability tree diagrams for independent events how to solve probability problems using probability tree diagrams.
Pencil, pen, ruler, protractor, pair of compasses and eraser you may use tracing paper if needed. Tree diagrams show a clear pattern of probabilities in branches rather than in a table. Probability and tree diagrams worksheets, questions and revision. Probability tree diagrams edexcel gcse maths how to do probability aa gcse maths revision higher level worked exam tree diagrams, conditional rotate to landscape screen format on a mobile phone or small tablet to use the mathway widget, a free math problem solver that answers your questions with stepbystep explanations. These probability and tree diagrams interactive notes can be used with interactive journals or on their own. Examsolutions youtube video stuart the examsolutions guy 20200225t15. Probability is the study of how likely things are to happen. Taken from the edexcel 2 year gcse scheme of work, containing prior knowledge, keywords, opportunities for problem solving and common misconceptions. Probability tree diagrams gcse questions and answers. A collection of 91 maths gcse sample and specimen questions from aqa, ocr. I created this for a lesson observation the pp and worksheet are adaptations of other resources i found online and tes so thank you for the help.
Download free pdfs or subscribe for access to multiple formats. Count outcomes using tree diagram video khan academy. In probability theory, a tree diagram may be used to represent a probability space tree diagrams may represent a series of independent events such as a set of coin flips or conditional probabilities such as drawing cards from a deck, without replacing the cards. Probability and tree diagrams worksheets maths made easy. Tree diagrams can be used to find the number of possible outcomes and calculate the probability of possible outcomes. Probability gcse tree diagrams exam questions with videos. The probability that she will win the game of snooker is 4 3 the probability that she will win the game of billiards is 3 1 complete the probability tree diagram. Worksheet of gcse exam questions based on probability tree diagrams good for use as independent work for homework practice of gcse exam style questions or in class as a worksheet for consolidation and working together in groups during whole class teaching.
Amy is going to play one game of snooker and one game of billiards. F probability h10 probability new gcse content resource. Finding probability using tree diagrams and outcome tables. Tree diagrams ks4gcse maths probability teaching resources. Probability revision and probability tree diagrams.
Dartspool b work out the probability that david wins at darts and also wins at pool. From the dot, branches are drawn to represent all possible. Construct a tree diagram and use it to answer a probability question. A worksheet with a range of problemsolving activities to give students practice of using probability tree diagrams with both independent probability and conditional probability. The probability of being late for work if she goes by route a is 10% and similarly by route b is 5% and route c is 2%. The probability that helen will pass the medical is 0. Tree diagrams can be confusing, so it is helpful for a guided example to help them learn how to use these helpful diagrams to unders. Whether you want a homework, some cover work, or a lovely bit of extra practise, this is the place for you. A probability tree diagram shows all the possible events. The lesson went really well so i wanted to share it. Probability 2 h gcse maths tutorials, revision and.
For example, the probability of the result of coin flip being heads is 0. How to use a tree diagram to solve probability gcse question level. The probability that he travels through rhayader is 07. Look at this example, which shows the probability that my bus is on time or late on monday and tuesday. Make sure all probabilities add to 1 and you are good to go. What is the probability that a voter who ignores the reporters is a bush voter. Probability and tree diagrams worksheets questions and revision. The probabilities of the dice landing on each of the numbers are a work out the value of p. Probability for gcse and igcse tree diagrams vivax. Gcse exam questions on higher probability probability tree. This means that most of the links on this page are not yet active.
How to use a tree diagram to solve probability gcse question level 5 duration. I will be working hard over the next couple of weeks to upload relevant resources and activate these links. Each node on the diagram represents an event and is associated with the probability of that event. Readytouse mathematics resources for key stage 3, key stage 4 and gcse maths classes. Probability tree diagrams solutions, examples, videos, worksheets. A tree diagram is simply a way of representing a sequence of events. Gcse tree diagrams teaching resource teachit maths. The answers to the worksheet are handwritten on the pdf attached. Tree diagrams display all the possible outcomes of an event. We express probabilities either as fractions, decimals, or percentages, and they always fall between 0 and 1, where 0 represents total impossibility and 1 represents total certainty.
The following examples show how the way they are used in two different situations. Gcse exam questions probability tree diagrams teaching. Gcse exam questions on higher probability probability tree grade a 1. The probability that it is on time on any day is 0. The probability of taking route a is 35%, and b is 25%. Each branch in a tree diagram represents a possible outcome. So there you go, when in doubt draw a tree diagram, multiply along the branches and add the columns. If it is thrown three times, find the probability of getting a three heads b 2 heads and a tail c at least one head. For more information please see the edexcel gcse maths page. This is a lesson on introducing probability tree diagrams. Aqa june 2004 intermediate paper 2 calculator ok an ordinary sixsided dice is biased. Completing a probability tree diagram for dependent events. Probability 2 h a collection of 91 maths gcse sample and specimen questions from aqa, ocr, pearsonedexcel and wjec eduqas.