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Learning objective

Interpret and apply a weighted aggregate index number.

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 StatisticsIndex numbers

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Quick explanation

Interpret and apply a weighted aggregate index number

  • This point belongs to Index numbers, especially Index numbers outcomes.
  • You need to be able to interpret and apply a weighted aggregate index number.
  • The key ideas to know are Interpret and Explain.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

InterpretExplain

Why it matters

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

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Flashcards10 linked cards

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Practice Questions7 linked questions

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Paper 1 structured question: Index numbers

Paper 1Statistical Techniques3 marks

Data Table

Production Data

Quantities and weights for products A, B, and C

ProductQuantityWeight
A1000.5
B1500.3
C2000.2
  1. a

    Calculate the weighted aggregate index number for the quantities produced using the given weights.

    Aim for approximately 3 distinct marking points.

    [3]
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