StatisticsDeep Dive
Applications of Cumulative Frequency
Part of Cumulative Frequency — GCSE Mathematics
This deep dive covers Applications of Cumulative Frequency within Cumulative Frequency for GCSE Mathematics. Revise Cumulative Frequency in Statistics for GCSE Mathematics with 14 exam-style questions and 20 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 9 of 10 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 9 of 10
Practice
14 questions
Recall
20 flashcards
Applications of Cumulative Frequency
Finding Percentiles
To find the value below which p% of the data lies:
- Calculate position: (p/100) × n
- Use the same method as finding median
- Example: 90th percentile position = (90/100) × 43 = 38.7
Finding How Many Below a Value
To find how many data items are below a certain value:
- Draw vertical line from the value to the curve
- Draw horizontal line to y-axis
- Read the cumulative frequency
Comparing Distributions
- Median: Shows typical value
- IQR: Shows spread of middle 50%
- Shape: Steep curve = data clustered, gentle curve = data spread