Learning objective

Estimate quartiles and percentiles from a cumulative frequency polygon or curve and a grouped frequency distribution using linear interpolation, including estimating frequencies for specific parts of the distribution.

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Cambridge IGCSE StatisticsQuartiles, percentiles and measures of dispersion

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Quick explanation

Estimate quartiles and percentiles from a cumulative frequency polygon or curve and a grouped frequency distribution using linear interpolation, including estimating frequencies for specific parts of the distribution

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 quartiles and percentiles from a cumulative frequency polygon or curve and a grouped frequency distribution using linear interpolation, including estimating frequencies for specific parts of the distribution.
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

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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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