Bar Graph


 
 
Concept Explanation
 

Bar Graph

Bar Graph: 

A bar graph is a pictorial representation of the numerical data by a number of bars (rectangle) of uniform width erected horizontally or vertically with equal spacing between them. Each rectangle or bar represents only one value of the numerical data and so there are as many bars as the number of values in the numerical data. The height or length of a bar indicates on a suitable scale the corresponding value of the numerical data.

Properties Of Bar Graph:

  • Each column is of equal width.
  • There is equal space between each column.
  • The height of each column indicates the value of data.
  • All bars or columns are drawn on the same common base.
  • Steps in construction of Bar Graphs / Column Graph: 

    Step 1: On a graph, draw two lines perpendicular to each other, intersecting at O (Origin). The horizontal line is x-axis and vertical line is y-axis.

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    Sample Questions
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    Question : 1

    How many students live between 4.0 - 4.9 km from the school?

    Right Option : C
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    Question : 2

    The bar chart shows the number of handphones sold by a shop in 5 days of a certain week. The difference between the highest number and the lowest number of handphones sold is 15. Find the number of handphones sold in Thursday.

    Right Option : C
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    Question : 3

    Do more students live between 0.0 - 1.9 km from the school or 3.0 - 4.9 km?

    Right Option : B
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