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Cambridge IGCSE Statistics practice

What happens to the mean of a dataset if each data point is increased by 4?

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Show answerTransformations of data sets revisionRevise the key idea

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MCQ

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cambridge_mcq

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Topic

Transformations of data sets

Exam-style question

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What happens to the mean of a dataset if each data point is increased by 4?.

  1. A.The mean increases by 4
  2. B.The mean decreases by 4
  3. C.The mean remains the same
  4. D.The mean is multiplied by 4

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Paper 1 structured question: Transformations of data sets

Paper 1Statistical Techniques4 marks

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]