Page 174 - Math Skill - 4
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172 Maths
(b) On which day were the maximum Days Number of students absent
number of students absent?
Monday
(c) On which day were only two
Tuesday
students absent?
Wednesday
(d) What is the total number of students
Thursday
in the above data?
Friday
(e) How many more students were
Saturday
absent on Friday than on Tuesday?
Key: = 2 children = 1 children
Bar Graphs
Another way to represent information or data is by drawing a bar graph. Pictographs require a
lot of skills in drawing clear pictures and to represent large numbers by pictographs becomes
difficult. So easier methods of presenting data have been devised. One such method is drawing
a Bar Graph.
To construct a bar graph, a suitable scale has to be decided, so that the lengths or heights of the
bars are easily represented in the graph.
The following bar graphs represent the number of cars sold by a company in the first five
months of the year in two different ways.
Title—Cars sold by a Company
May 50
Apr 40
50 50 Months Mar 25
Number of cars 20 30 25 40 Feb 30
40
30
10 20 Jan 20
Jan Feb Mar Apr May 10 20 30 40 50
Months
Number of cars
From the above graphs, we see that:
Every bar graph must have a title.
Information is represented along the two lines, horizontal and vertical.
Each line must have labels to explain as to what information is being represented.
