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Cambridge IGCSE Statistics practice

Paper 1 structured question: Transformations of data sets

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Transformations of data sets

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Paper 1Statistical Techniques4 marks

A dataset consists of the numbers 2, 4, 6, 8, and 10.

Description

Dataset Transformation

Consider the dataset: 2, 4, 6, 8, 10.

  1. a

    Calculate the mean of the dataset after adding 3 to each number.

    Aim for approximately 2 distinct marking points.

    [2]
  2. b

    Calculate the standard deviation of the dataset after adding 3 to each number.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 1 structured question: Transformations of data sets

Paper 1Statistical Techniques4 marks

Description

Dataset Transformation

Consider the dataset: 3, 6, 9, 12, 15.

  1. a

    Calculate the mean of the dataset after multiplying each number by 2.

    Aim for approximately 2 distinct marking points.

    [2]
  2. b

    Calculate the standard deviation of the dataset after multiplying each number by 2.

    Aim for approximately 2 distinct marking points.

    [2]