Learning objective

Understand the distinction between ungrouped and grouped frequency distributions, such as those defined by ranges like 30 to under 40, and recognize the pros and cons of consolidating data into a grouped frequency distribution.

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Exam focus

Cambridge IGCSE StatisticsFrequency distributions

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Quick explanation

This point belongs to Frequency distributions, especially Frequency distributions outcomes.
You need to be able to understand the distinction between ungrouped and grouped frequency distributions, such as those defined by ranges like 30 to under 40, and recognize the pros and cons of consolidating data into a grouped frequency distribution.
The key ideas to know are Define, Explain, and Identify.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DefineExplainIdentify

Why it matters

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

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Practice Questions7 linked questions

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Paper 1Statistical Techniques1 marks

Data Table

The following table shows the distribution of test scores for a class of 20 students.

a
Calculate the total number of students who scored 30 or above.
Your answer
Aim for approximately 1 distinct marking point.
[1]

Revision notestopic notes

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