Frequency density
What Frequency density means in Mathematics A-Level, as defined for AQA, Pearson Edexcel, WJEC.
Definitions of Frequency density
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Reference: WJEC
The vertical axis quantity calculated via frequency density = frequency / class width when class intervals have unequal widths.
Frequency divided by class width, so that a bar of width 5 and height 4 represents a frequency of 20.
Calculated as frequency divided by class width, and the area of each bar equals frequency.
Topics that use Frequency density
- L: Data presentation and interpretation (AQA A-Level)
- Data presentation and interpretation (Pearson Edexcel A-Level)
- Data presentation and interpretation (AS Unit 2: Applied Mathematics A) (WJEC A-Level)
Related terms
- standard deviation
- Summary statistics
- Cleaning data
- Correlation
- data cleaning
- Histogram
- interquartile range
- Measures of central tendency
Using Frequency density in the exam
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