📊 Statistics

Cumulative frequency

Learn cumulative frequency with a GCSE-style explanation, help guide, worked example, practice question and flashcards.

StatisticsGCSE25 XP completion3 flashcards

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Level 1

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1. Explanation

Key idea

Cumulative frequency is part of statistics and appears often in KS3–GCSE maths.
Cumulative frequency is a running total.
Use the worked model, help guide, interactive question and flashcards to practise cumulative frequency until the steps feel automatic.

Shopping, sport, travel, science, design and everyday decisions all use this skill.

2. Visual

Understand the key idea → follow the help guide → practise a question → check your method → build speed with flashcards.

3. Help guide

Learn the rule: Cumulative frequency is a running total.
Worked model: Read up from the value on the x-axis. Go across to the cumulative frequency. Use quartile positions if needed.
Try the interactive question without looking at the answer first.
Use the flashcards to test the rule, the method and a common check.

4. Worked examples

Answer: At x = 50, CF = 24 means 24 values up to 50

5. Interactive questions

6. Flashcards

Flip each card, then choose whether you know it or need more practice.

0 mastered

FrontRule for Cumulative frequency

BackCumulative frequency is a running total.

FrontExample answer: A cumulative frequency graph shows 30 values below 20. How many are less than 20?

BackThe graph value at 20 is 30, so 30 values are less than 20.

FrontCommon check for Cumulative frequency

BackCheck units/notation, compare with an estimate, and make sure the answer matches the question.

7. Finish

When you have read the examples, tried the question and reviewed flashcards, claim your topic completion XP.