When numerical data is presented as columns on a graph, then this graphical representation of data is called a bar graph. In a bar graph bars of uniform width can be drawn horizontally or vertically with equal spacing between them and the length of each bar represents the given value or data.
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.
Step 2: Along the horizontal axis, choose the uniform width of bars and uniform gap between the bars and write the names of the data items whose values are to be marked.
P, Q and R are three shops selling computers. The sales made by shop P is of the sales made by shop R. The volume of sales by shop Q is twice the volume made by shop P. Shop R sold 600 computers. Which of the following bar charts correctly re[resent the sales of computers by shops P, Q and R. | |||
Right Option : A | |||
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Between what distances from the school do 87 students live? | |||
Right Option : D | |||
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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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