How to Make a Bar Graph

In mathematics, we will see different types of graph such as histogram graph, function graph. Here we will understand that How to Make a Bar Graph. Generally bar graph are used to categorized the different information, situations by taking bars in the graph. Bar graph is also called as bar charts. Here we need to follow some steps while constructing bar graph are given below:
Step 1: To plot a bar graph first of all we have to plot the axis in the graph. As we discuss above that two axis are there in a graph that is named as x – axis and y -  axis.
Step 2: Then after we have to select an appropriate scale and construct equal intervals.
Step 3: Now using the information of given data items label the horizontal axis.
Step 4: According to data items plot the bars.
Step 5: At last named the title of a graph.
Now we have to apply these steps in example.
 For example: Using the table mention below plot a bar chart.
Scores on the practice Test and the Test

Scores on the practice Test and the Test Student Practice Test Test
Hussen	60	70
Tomer	75	90
Marrine	55	55
Jiff	80

 Solution:
  First of all select or named the title from above mention table. As we see in the table that the title of above table is 'Score on practice Test and Test'. After that choose vertical bars. Here scores are different from one another mostly by 5, 10, 15 or 20. It means select a scale of 10.
 If we find any variation between scores then scores are like 1, 2, 3, 4, or 5, then it is better to select a scale of 1 or 2.
 After marking names on x – axis and scores on y – axis. Suppose if we decide to plot horizontal bars then put names on y – axis and scores on x – axis. At last plot the bars. Bar graph is shown below:

This is how we plot double bar graph using above steps. Now we will see Properties of Real Numbers.Commutative property of addition and commutative property of multiplication. for the prepration of 2013 board exam please prefer icse 2013 board papers.