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

    The graph includes distances for all the students at Union School. About how many students attend the school?

    Right Option : D
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    Question : 2

    What is the average sales of all the branches (in thousand numbers) for the year 2000?

    Right Option : C
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    Question : 3

    The bar chart shows the number of television sets sold by a shop in 5 months. The sales in May, as a percentage of the total sales in the 5 months is:

    Right Option : A
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