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Learning objective

Calculate a weighted aggregate index number using weights derived from base year spending, which may require calculation.

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Cambridge IGCSE StatisticsIndex numbers

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Quick explanation

Calculate a weighted aggregate index number using weights derived from base year spending, which may require calculation

  • This point belongs to Index numbers, especially Index numbers outcomes.
  • You need to be able to calculate a weighted aggregate index number using weights derived from base year spending, which may require calculation.
  • The key ideas to know are Calculate.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Calculate

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

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Paper 1 structured question: Index numbers

Paper 1Statistical Techniques3 marks

Data Table

Product Data

Base year quantities and prices, and current prices for products A, B, and C.

ProductBase Year QuantityBase Year Price (£)Current Price (£)
A1023
B545
C834
  1. a

    Calculate the total base year spending for each product.

    Aim for approximately 3 distinct marking points.

    [3]
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