|Class 6 Maths Data Handling||Drawing a Bar Graph|
Drawing a Bar Graph
To draw a bar graph, first of all draw a horizontal line and a vertical line. On the
Horizontal line we will draw bars representing the data (numbers) and on vertical line we will write numerals .which shows what data is being represented.
Same data can also be represented by interchanging the items on horizontal and vertical axis.
It is important to take bars of same width keeping uniform gap between them. Next, a scale is chosen if needed. The scale varies according to the data given.
Following problems explain how a bar graph is drawn:
Problem: The number of Mathematics books sold by a shopkeeper on six consecutive days is shown below:
Draw a bar graph to represent the above information choosing the scale of your choice.
To draw a bar graph, days are taken on horizontal axis and the number of books sold is taken on the vertical axis.
The scale taken for representing this data is 1 unit length = 5 shirts. This scale is taken along the vertical line since the number of books is marked on the y axis.
The height of the bars for various days is:
Problem: Following table shows the number of bicycles manufactured in a factory during the years 1998 to 2002. Illustrate this data using a bar graph. Choose a scale of your choice.
The year 2002 is the year represented by bar with maximum height. Hence maximum number of cycles were sold in 2002, that is, 1200.
The year 1999 is the year represented by bar with minimum height. Hence minimum number of cycles were sold in 1999, that is, 600.