Sometimes he decides to stop for a break during his journey. Route rhayader 07 hereford stops for a break no yes 41 b. 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. How to use a tree diagram to solve probability gcse question level. A collection of 91 maths gcse sample and specimen questions from aqa, ocr. Probability and tree diagrams worksheets questions and revision. Taken from the edexcel 2 year gcse scheme of work, containing prior knowledge, keywords, opportunities for problem solving and common misconceptions. Probability tree diagrams solutions, examples, videos, worksheets. Count outcomes using tree diagram video khan academy. Completing a probability tree diagram for dependent events. Finding probability using tree diagrams and outcome tables. Dartspool b work out the probability that david wins at darts and also wins at pool. Tree diagrams are a way of showing combinations of two or more events.
For example, the probability of the result of coin flip being heads is 0. Probability is the study of how likely things are to happen. Tree diagrams display all the possible outcomes of an event. I will be working hard over the next couple of weeks to upload relevant resources and activate these links. These probability and tree diagrams interactive notes can be used with interactive journals or on their own.
Aqa june 2004 intermediate paper 2 calculator ok an ordinary sixsided dice is biased. 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. Make sure all probabilities add to 1 and you are good to go. The probabilities of the dice landing on each of the numbers are a work out the value of p. A probability tree diagram shows all the possible events. So there you go, when in doubt draw a tree diagram, multiply along the branches and add the columns. Probability tree diagrams solutions, examples, videos.
Amy is going to play one game of snooker and one game of billiards. The probability that he gets a lift to college is 04. Gcse exam questions on higher probability probability tree. The answers to the worksheet are handwritten on the pdf attached. What is the probability that a voter who ignores the reporters is a bush voter. 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 that he travels through rhayader and stops for a break is 042. You can see more uses of tree diagrams on conditional probability. Tree diagrams show a clear pattern of probabilities in branches rather than in a table. How to use a tree diagram to solve probability gcse question level 5 duration. Probability 2 h gcse maths tutorials, revision and. Gcse exam questions on higher probability probability tree grade a 1.
Pencil, pen, ruler, protractor, pair of compasses and eraser you may use tracing paper if needed. Draw a tree diagram to represent the probabilities in each case. A tree diagram is simply a way of representing a sequence of events. Gcse exam questions probability tree diagrams teaching. The probability that he wins on the penny drop is 0. Finding probability using tree diagrams and outcome tables chapter 4. 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. The lesson went really well so i wanted to share it. Whether you want a homework, some cover work, or a lovely bit of extra practise, this is the place for you. Download free pdfs or subscribe for access to multiple formats. Probability and tree diagrams worksheets, questions and revision. Each node on the diagram represents an event and is associated with the probability of that event. Each branch is labelled at the end with its outcome and the probability.
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. Sample spaces are often represented using tree diagrams or charts. Tree diagrams can be used to find the number of possible outcomes and calculate the probability of possible outcomes. From the dot, branches are drawn to represent all possible.
Question 1 question 2 question 3 question 4 question 5 question 6 question 7 question 8 question 9 question 10. Probability tree diagrams animated powerpoint independent events dependent events worksheet included pdf gcse higher the demo video shows an accelerated. Probability for gcse and igcse tree diagrams vivax. 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. Probability gcse tree diagrams exam questions with videos. Updated for the 2012 exam ultimate gcse statistics. Useful as a revision activity at the end of a topic on probability tree diagrams or for gcse maths revision. Probability revision and probability tree diagrams. 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. Students can learn what probability is and how to find it. 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. The probability of taking route a is 35%, and b is 25%. 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 daisy wears a bracelet and wears a necklace is 063.
Mar 29, 2017 gcse maths revise probability and tree diagrams. 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. Probability, tree diagrams, gcse, differentiated, worksheets. F probability h10 probability new gcse content resource. Probability tree diagrams for independent events how to solve probability problems using probability tree diagrams. Tree diagrams ks4gcse maths probability teaching resources. Awesome resource for pushing students understanding of using lists, tree diagrams and tables to find the probability of compound events. Visit for quick reminder high school gcse mathematics videos. Gcse 91 exam question practice probability trees teaching. Tree diagrams are useful to answer probability questions where there is more than one event happening in succession. Each branch in a tree diagram represents a possible outcome.
This is a lesson on introducing probability tree diagrams. Probability and tree diagrams worksheets maths made easy. Probability tree diagrams gcse questions and answers. Probability that daisy wears a necklace 2 21 b o complete the tree diagram. A coin is biased so that it has a 60% chance of landing on heads. Look at this example, which shows the probability that my bus is on time or late on monday and tuesday.
In the following problems, were now shifting to probability tree diagrams that are not in the classic shape. 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. Gcse tree diagrams teaching resource teachit maths. Construct a tree diagram and use it to answer a probability question. For daisy, wearing a bracelet and wearing a necklace are independent events. Tree diagrams are particularly useful in probability since they record all possible outcomes in a. The probability that helen will pass the medical is 0. Readytouse mathematics resources for key stage 3, key stage 4 and gcse maths classes. The probability that it is on time on any day is 0. The probability that he walks home from college is 07. Alevel edexcel statistics s1 june 2008 q1d probability tree diagrams. The following examples show how the way they are used in two different situations. Probability 2 h a collection of 91 maths gcse sample and specimen questions from aqa, ocr, pearsonedexcel and wjec eduqas.
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