Learning objective

Illustrate the cumulative frequency distribution of a continuous variable using a cumulative frequency polygon or curve, and interpret the information conveyed by this representation.

Read the explanation, check the common trap, then practise with flashcards and questions.

Exam focus

Cambridge IGCSE StatisticsFrequency distributions

Study support

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Quick explanation

This point belongs to Frequency distributions, especially Frequency distributions outcomes.
You need to be able to illustrate the cumulative frequency distribution of a continuous variable using a cumulative frequency polygon or curve, and interpret the information conveyed by this representation.
The key ideas to know are Plot, Interpret, and Explain.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

PlotInterpretExplain

Why it matters

This objective helps connect Frequency distributions outcomes to exam-style questions, flashcards, and revision notes for Frequency distributions.

Revision tools

Flashcards10 linked cards

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Practice Questions7 linked questions

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Paper 1Statistical Techniques6 marks

Data Table

The table shows cumulative frequencies for height intervals.

a
Plot Plot a cumulative frequency polygon for the data on graph paper.
Your answer
Aim for approximately 3 distinct marking points.
[3]
b
Interpret Using the cumulative frequency polygon, estimate the median height of the plants.
Your answer
Aim for approximately 3 distinct marking points.
[3]

Revision notestopic notes

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