In pictograph, we use images to represent data. For example the picturesigns are representing dissimilar numbers. This way of representing numerical data is time uncontrollable and it is complicated to compare two items. Instead of pictures and signs, it is better to use bars. Thistype of demonstration is called bar diagram or bar graph.
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Draw the bar graphs for the following table
|Name of animals||Lion||Elephant||Dear||White footed antelope||Bear|
|Number of animals||2|| 8 ||14||16||10|
L - Lion
E - Elephant
W - White footed antelope
B - Bear
•First we obtain a paper sketch the parallel line at the bottom of thepaper it is called x axis. While sketch the parallel line leave sufficient space for scale select, draw another line vertical to the parallel line. It is called y axis.
•Along the parallel axis, we spot the information ‘number of animals’ and beside perpendicular axis, we spot the equivalent other information namely ‘name of the animals’
Types of bar graph:
The three types of bar graphs are,
•Simple bar graph
•Divided bar graph
•Double bar graph
Learning advantages of bar graphs includes:
Learning Dis advantages of Bar graphs:
The following are the few dis advantages of bar graphs,