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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What is the ratio of the total sales of branch B2 for both years to the total sales of branch B4 for both years? | |||
Right Option : B | |||
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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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