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Cambridge IGCSE Statistics practice

Paper 1 structured question: Measures of central tendency

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Measures of central tendency

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Paper 1Statistical Techniques3 marks

A company is analyzing the salaries of its employees to determine the average salary. The data includes a few extremely high executive salaries.

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Employee Salary Analysis

The company wants to find the average salary of its employees, but the data set includes a few very high executive salaries that could skew the results.

  1. a

    Explain why the median might be a better measure of central tendency than the mean in this context.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 1 structured question: Measures of central tendency

Paper 1Statistical Techniques2 marks

Description

Student Reading Habits

The survey aims to find the central tendency of books read by students in a month, with most reading 1 to 3 books, but some reading over 10.

  1. a

    Justify the use of mode as the measure of central tendency for this data.

    Aim for approximately 2 distinct marking points.

    [2]