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Cambridge IGCSE Statistics practice

What is the mean of two data sets with means of 10 and 20, each containing 5 values?

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Show answerTransformations of data sets revisionRevise the key idea

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MCQ

Type

cambridge_mcq

Style

Topic

Transformations of data sets

Exam-style question

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What is the mean of two data sets with means of 10 and 20, each containing 5 values?.

  1. A.15
  2. B.12.5
  3. C.20
  4. D.10

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Paper 1 structured question: Transformations of data sets

Paper 1Statistical Techniques5 marks

Data Table

Product Sales

The table shows the number of products sold each day.

DayProducts Sold
Monday12
Tuesday15
Wednesday14
Thursday19
  1. a

    Calculate the mean number of products sold per day.

    Aim for approximately 2 distinct marking points.

    [2]
  2. b

    Calculate the standard deviation of the products sold.

    Aim for approximately 3 distinct marking points.

    [3]