This deep dive covers Grouped Frequency Tables within Frequency Tables for GCSE Mathematics. Revise Frequency Tables in Statistics for GCSE Mathematics with 11 exam-style questions and 20 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 4 of 7 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 4 of 7
Practice
11 questions
Recall
20 flashcards
Grouped Frequency Tables
When to Use Grouped Data
Use grouped frequency tables when:
- Data has a wide range of values
- Continuous data (like heights, weights)
- You want to see patterns more clearly
- Individual values would make a very long table
Creating Grouped Frequency Tables
Example: Test scores of 30 students (out of 100)
45, 67, 72, 58, 63, 81, 56, 74, 68, 59, 77, 82, 54, 71, 66, 78, 83, 62, 69, 75, 57, 73, 64, 79, 85, 61, 76, 70, 65, 80
| Score Range | Frequency |
|---|---|
| 40 ≤ s < 50 | 1 |
| 50 ≤ s < 60 | 5 |
| 60 ≤ s < 70 | 9 |
| 70 ≤ s < 80 | 8 |
| 80 ≤ s < 90 | 7 |
| Total | 30 |
Key observations:
- Modal class: 60 ≤ s < 70 (highest frequency = 9)
- Class width = 10 marks for all classes
- Most students scored between 60-80 marks