1. Creating Bar Diagram

2. Introduction
A Bar Graph (also called Bar Chart) is a graphical display of data using bars of different heights.
A Bar graph consists of equally – spaced parallel bars (Horizontal or vertical) whose lengths / heights are proportional to the number of items given.

3. Example:
The total number of runs scored by a players in one day match in India is given. Draw a bar diagram
Players 1 2 3 4 5 6
No. of runs 30 60 15 50 70 45

4. Drawing Bar Graphs
Step 1: Draw two lines which are perpendicular to each other.
One of them is horizontal
and the other one is vertical

5. Runs scored by a players
Step 2: Give a suitable title and label the horizontal and vertical lines.
Title Runs scored by a players
Horizontal line Players
Vertical Line No. of runs
Runs scored by a players
NO . Of runs
Players

6. Runs scored by a players
Step 3: Choose a suitable scale for ‘No of runs”.
Choose a scale such that after writing few multiples we cross the max value 70. Scale chosen : 1 unit =10 runs. Since we get max value 70 in the 7th step.
NO . Of runs
Players
Runs scored by a players

7. Runs scored by a players
Step 4: Draw equal width bars for each player with height equal to ‘No of runs’
Players 1 2 3 4 5 6
No. of runs 30 60 15 50 70 45
NO . Of runs
Players
Runs scored by a players
15 is between 10 and 20
45 is between 40 and 50 1 2 3 4 5 6

8. Try These
Construct a bar diagram to represent the following information. Number of absentees in a week in a corporation high school is given:
Class 6 7 8 9 10
Absentee 12 15