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Unformatted text preview: est value in the series.
To make the diagram attractive, the bars can be coloured.
Bar diagram are used in business and economics. However, an
important limitation of such diagrams is that they can present only
one classification or one category of data. For example, while
presenting the population for the last five decades, one can only
depict the total population in the simple bar diagrams, and not its
70 Example 2:
Represent the following data by a bar diagram. Year Production
(in tones) 1991
Simple Bar Diagram
(in tonnes) 50
1991 1992 1993 1994 1995 Year Multiple Bar Diagram:
Multiple bar diagram is used for comparing two or more
sets of statistical data. Bars are constructed side by side to
represent the set of values for comparison. In order to distinguish
bars, they may be either differently coloured or there should be
different types of crossings or dotting, etc. An index is also
prepared to identify the meaning of different colours or dottings.
71 Example 3:
Draw a multiple bar diagram for the following data.
Profit before tax
Profit after tax
( in lakhs of rupees )
( in lakhs of rupees )
Solution: Profit (in Rs) Multiple Bar Diagram
1998 1999 2000 2001 Year Profit before tax Profit after tax Sub-divided Bar Diagram:
In a sub-divided bar diagram, the bar is sub-divided into
various parts in proportion to the values given in the data and the
whole bar represent the total. Such diagrams are also called
Component Bar diagrams. The sub divisions are distinguished by
different colours or crossings or dottings.
The main defect of such a diagram is that all the parts do
not have a common base to enable one to compare accurately the
various components of the data.
Represent the following data by a sub-divided bar diagram.
72 Monthly expenditure
35 Expenditure items
Solution: Sub-divided Bar Diagram Monthly expenditure (in Rs) 240
Family A Expenditure item Food Clothing Housing Rent Family B Education Miscellaneous Percentage bar diagram:
This is another form of component bar diagram. Here the
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This note was uploaded on 01/18/2014 for the course BUS 100 taught by Professor Moshiri during the Winter '08 term at UC Riverside.
- Winter '08