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Cumulative Frequency

Revise Cumulative Frequency in Statistics for GCSE Mathematics with 14 exam-style questions and 20 flashcards. This topic appears regularly enough that it should be part of a solid GCSE revision cycle.

Study this topic

1

Building Up the Picture

Introduction2

Key Facts About Cumulative Frequency

Key Facts3

Cumulative Frequency Table Example

Diagram4

Creating Cumulative Frequency Tables

Deep Dive5

Cumulative Frequency Curve

Diagram6

Finding the Median from Cumulative Frequency

Deep Dive7

Finding Quartiles

Deep Dive8

Exam Tips for Cumulative Frequency

Exam Tips9

Applications of Cumulative Frequency

Deep Dive10

Common Mistakes to Avoid

Exam Tips

Sample Flashcards

What is cumulative frequency?
Cumulative frequency is the running total of frequencies up to and including each class. It shows how many data values fall below the upper boundary of each class.
How do you calculate cumulative frequency?
Start with the first frequency. For each subsequent class, add the current frequency to the previous cumulative frequency: CF₂ = CF₁ + f₂ CF₃ = CF₂ + f₃, and so on.

Sample Questions

Cumulative frequency is:

  • A. The highest frequency in a table
  • B. The running total of frequencies up to and including each class
  • C. The mean of all frequencies
  • D. The difference between the largest and smallest frequencies
1 markfoundation

The graph shows the times for 60 students. The cumulative frequency at 40 seconds reads as 48. Estimate the number of students who took longer than 40 seconds to complete the puzzle.

2 marksstandard

14

exam-style questions

20

revision flashcards

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