Double Bar Graph Double Bar Graph Graph is the part of geometry mathematics. In mathematics graph is used for abstract representation of set of data where some of data are connected by links. In the general sense we can say that graph is a diagrammatic representation of data. During the study of the graph we can see that graph can be categorized in various ways like line graph, bar graph, double bar graph, pie chart and so on. Form different types of graph here we are going to study about the double bar graph. Bar graph is a type of graph which is used to display a given set of data in the form of bars. Here we want to say that bar graph do the same task as like the double bar graph but there is one basic difference exist between them. The basic difference between the bar graph and double bar graph is that a bar graph displays the one kind of data on the graph but the Double Bar Graph compares two different sets of data or information. From the above difference theory we can understand that the Double Bar Graph is used only when data has the two different sets of frequencies. That’s why double bar graph are very popular in the business world, various educational field or various government sectors.
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Suppose an organization wants to create their annual budget report to create the financial planning. At that time they want to compare the records to generate the annual report. At that time double bar graph provide the help to compare the records of two years in the diagram form. This concept helps the company to better understand the status of the company in past two years. In that situation they collect their records and perform the operation of putting the records value different departments into the double bar graph. Double bar graph are the graph which is generally known double bar charts. In the double bar graph we can represent the data more than one data value. If the double bar graph is design perfectly then the observation and their related decision also get perfect. So at the time of creating a double bar graph we need to remember certain thing that makes the bar graph correct. In the below we show you some of the steps for creating a double bar graph. a) In the first step we need to remember that the title of the graph should be clear and specify the purpose of the graph. b) This is the optional step depends on the designer that he wants the bars in the graph as horizontal or vertical. c) User of the double bar graph need to make a special attention at the time of selecting the scale of the graph. d)
After that put the labels on the axis of the graph.
e) Now create the bars on the available data values. Here one thing must remember that the values of same time period located in a same place but with different color.
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f) In the whole process remember that different data values that are related to the different time period must be shown in separate portion. g)
Color selection process should be perfect for perfect representation of double bar graph.
Note :1. All bars have the same thickness. 2. Distance between two consecutive bars is the same. The bars can touch each other. 3. The height of each bar represents the frequency number of students. 4. The thickness has no significance. 5. Bar graphs are preferred when each item of data is separate from the other.
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