Comparing multiple representations to calculate conditional probabilities
I can compare and contrast the usefulness of the different representations when calculating conditional probabilities.
Comparing multiple representations to calculate conditional probabilities
I can compare and contrast the usefulness of the different representations when calculating conditional probabilities.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- The same conditional probability can be found from multiple representations
- Each representation can be compared to see how conditional probabilities are calculated
- Information from one representation can be displayed in a different representation
- The preferred representation may change depending on the context
Keywords
Probability - The probability that an event will occur is the proportion of times the event is expected to happen in a suitably large experiment.
Probability tree - Each branch of a probability tree shows a possible outcome from an event or from a stage of a trial, along with the probability of that outcome happening.
Independent events - Event A is independent of event B if the probability of event A occurring is not affected by whether or not event B occurs.
Mutually exclusive - Mutually exclusive events have no outcomes in common.
Venn diagram - Venn diagrams are a representation used to model statistical/probability questions. Commonly circles are used to represent events.
Common misconception
Pupils may think that only one type of diagram/table can be used to represent each probability problem and worry about choosing the correct one.
Emphasise that the same probability problem can often be represented using multiple diagrams or tables. In many cases, they will be able to find what they are looking for in any representation but it may be clearer to see in some more than others.
To help you plan your year 11 maths lesson on: Comparing multiple representations to calculate conditional probabilities, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 11 maths lesson on: Comparing multiple representations to calculate conditional probabilities, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
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The assessment exit quiz will test your pupils' understanding of the key learning points.
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Explore more key stage 4 maths lessons from the Conditional probability unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Lesson video
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Starter quiz
6 Questions
Exit quiz
6 Questions
$$a$$ -
24
$$b$$ -
9
$$d$$ -
6
$$f$$ -
10
