Learning objective

Estimate the interquartile range from a cumulative frequency polygon or curve and a grouped frequency distribution using linear interpolation.

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Exam focus

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Practise with linked questions.

Cambridge IGCSE StatisticsQuartiles, percentiles and measures of dispersion

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Quick explanation

Estimate the interquartile range from a cumulative frequency polygon or curve and a grouped frequency distribution using linear interpolation

This point belongs to Quartiles, percentiles and measures of dispersion, especially Quartiles, percentiles and measures of dispersion outcomes.
You need to be able to estimate the interquartile range from a cumulative frequency polygon or curve and a grouped frequency distribution using linear interpolation.
The key ideas to know are Calculate and Interpret.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

CalculateInterpret

Why it matters

This objective helps connect Quartiles, percentiles and measures of dispersion outcomes to exam-style questions, flashcards, and revision notes for Quartiles, percentiles and measures of dispersion.

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