MathsNet: D - Displaying data - The method

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TTransformations, Travelling salesman problem, Triangles, Trigonometry

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Page ID: 11829

D | Displaying data | Histograms | «The method»

A histogram is a lot more than a bar chart! In a histogram, the area of the bar, NOT its height, is proportional to frequency. Bars do not have to be of equal width. The height of each bar is called the frequency density.

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Glossary

density

the ratio of the mass of an object to its volume

frequency

Of a function: the rate of repetition of a periodic function.
In statistics: the number of occurances of a value

frequency density

The frequency density of a frequency distribution is given by
(class frequency)/(class width).

histogram

A statistical diagram for continuous data similar to a bar chart but where the area of each bar is proportional to the frequency.

union

The union of two sets A and B is the set containing all the elements of A and B.

Full Glossary List

This question appears in the following syllabi:

Syllabus	Module	Section	Topic	Exam Year
AQA AS Maths 2017	Statistics	Data Presentation and Interpretation	Histograms	-
AQA AS/A2 Maths 2017	Statistics	Data Presentation and Interpretation	Histograms	-
AQA GCSE (9-1) Higher (UK)	S: Statistics	S3: Grouped Data, Histograms and Cumulative Frequency	Histograms	-
CBSE IX (India)	Statistics	Displaying Data	Histograms	-
CIE IGCSE (9-1) Maths (0626 UK)	9 Statistics	B9.4 Graphical Representations	Histograms	-
Edexcel AS Maths 2017	Statistics	Data Presentation and Interpretation	Histograms	-
Edexcel AS/A2 Maths 2017	Statistics	Data Presentation and Interpretation	Histograms	-
Edexcel GCSE (9-1) Higher (UK)	S: Statistics	S3: Grouped Data, Histograms and Cumulative Frequency	Histograms	-
GCSE Higher (UK)	Statistics	Displaying data	Histograms	-
OCR AS Maths 2017	Statistics	Working with Data	Histograms	-
OCR GCSE (9-1) Higher (UK)	12: Statistics	12.02b: Grouped Data	Histograms	-
OCR MEI AS Maths 2017	Statistics	Working with Data	Histograms	-
Universal (all site questions)	D	Displaying data	Histograms	-