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Learning objective

Determine the probabilities for all potential outcomes in straightforward scenarios and display the probability distribution in tabular form.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE StatisticsProbability distributions

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Quick explanation

Determine the probabilities for all potential outcomes in straightforward scenarios and display the probability distribution in tabular form

  • This point belongs to Probability distributions, especially Probability distributions outcomes.
  • You need to be able to determine the probabilities for all potential outcomes in straightforward scenarios and display the probability distribution in tabular form.
  • The key ideas to know are Calculate, Show, and State.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

CalculateShowState

Why it matters

This objective helps connect Probability distributions outcomes to exam-style questions, flashcards, and revision notes for Probability distributions.

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Practice Questions7 linked questions

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Paper 1 structured question: Probability distributions

Paper 1Statistical Techniques5 marks

Description

Marble Draw

A bag contains 5 green, 3 yellow, and 2 red marbles. One marble is drawn at random.

ColourNumber of marbles
Green5
Yellow3
Red2
  1. a

    Calculate the probability of drawing a yellow marble.

    Aim for approximately 2 distinct marking points.

    [2]
  2. b

    Determine the probability distribution for the colour of the marble drawn.

    Aim for approximately 3 distinct marking points.

    [3]
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