# Double Bar Graphs

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We can use the double bar graphs to compare or present more than one kind of information by using bars. We can also call the Double bar graphs as double bar charts. We have some important points to draw double bar graphs. Those are
1. We need to decide which title we can give to graph
2. We need to decide what kind of bars we can take (horizontal or vertical bars)
3. given We need to choose a proper scale
(To give the proper scale, we need to find the difference of the numbers which are in table, then from that, we can take the scale)
1. We need to put the labels to x and y axis
2. Next, from the given information, we need to draw the bars with the using of scale which we have taken in the third step.
Example1:Construct the double bar graph with using of below table.We can use the double bar graphs to compare or present more than one kind of information by using bars. We can also call the Double bar graphs as double bar charts. We have some important points to draw double bar graphs. Those are
1. We need to decide which title we can give to graph
2. We need to decide what kind of bars we can take (horizontal or vertical bars)
3. given We need to choose a proper scale
(To give the proper scale, we need to find the difference of the numbers which are in table, then from that, we can take the scale)
1. We need to put the labels to x and y axis
2. Next, from the given information, we need to draw the bars with the using of scale which we have taken in the third step.
Example1:Construct the double bar graph with using of below table.

Solution:
Step1: We need to decide which title we can give to graph

We have the title from table that is

“Scores in practice test and test of students”

Step2: We decided to take vertical bars

Step3: Since the scores are differ from one another by 5, 10, 15 0r 20

So, we can take scale of 10

If the differences are like 2, 4, 6

We can take scale of 2

Step4: we can label the x axis with student’s names
Y axis with scores

Step 5:  Finally, from the given information, we need to draw the bars