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Cambridge IGCSE Statistics practice

Paper 1 structured question: Index numbers

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Index numbers

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Paper 1Statistical Techniques3 marks

A company produces three products: A, B, and C. The quantities produced and their assigned weights based on sales importance are shown below.

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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Paper 1 structured question: Index numbers

Paper 1Statistical Techniques3 marks

Data Table

Price and Weight Data

Prices and weights for goods X, Y, and Z

GoodPriceWeight
X1200.4
Y800.35
Z1000.25
  1. a

    Calculate the weighted aggregate price index using the given data.

    Aim for approximately 3 distinct marking points.

    [3]