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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 Techniques2 marks

A dataset of exam scores has a mean of 75 and a standard deviation of 5.

Description

Standardizing Exam Scores

The dataset includes exam scores with a mean of 75 and a standard deviation of 5.

  1. a

    Calculate Calculate the z-score for a score of 85.

    Aim for approximately 2 distinct marking points.

    [2]

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Paper 1 structured question: Transformations of data sets

Paper 1Statistical Techniques2 marks

Description

Standardizing Heights

The dataset includes the heights of students in a class, with a mean of 160 cm and a standard deviation of 10 cm.

  1. a

    Calculate Calculate the z-score for a student with a height of 170 cm.

    Aim for approximately 2 distinct marking points.

    [2]