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Unit 4: Presentation of Data
9. Pyramid Diagram: This diagram is used to represent the distribution of population Notes
according to sex, age, occupation, education, etc. The bars are drawn adjacently one above
the other so as to look like a pyramid, as shown in the diagram.
Example: Given below are the figures of enrolment in a college during 2005-2010.
Represent the data with the help of a suitable diagram.
Years : 2005 2006 2007 2008 2009 2010
Male Students : 800 850 1120 1300 1360 1600
Female Students : 400 450 480 500 540 600
Total : 1200 1300 1600 1800 1900 2200
Sex-wise Distribution of Students of a College
2005
2006
2007
2008
2009
2010
10. Broken-Scale Bar Diagram: When there are one or more figures of unusually high
magnitude while the majority of the figures are of low magnitude, the diagrammatic
representation is done by using a broken scale as shown in the following example.
Example: Represent the following data by a suitable diagram :
:
: 10 12 15 80 90
( '000 )
Bar Diagram Representing Profits of five Firms
LOVELY PROFESSIONAL UNIVERSITY 63
