The data which changes over a period of time can be displayed through a line graph.
In line graph:
● Points are plotted on the graph related to two variables
● Points are joined by the line segments.
How to Construct a Line Graph?
Steps of construction of line graph:
On a graph, draw two lines perpendicular to each other intersecting at O. The horizontal line is xaxis and vertical line is yaxis. Mark points at equal intervals along xaxis and write the names of the data items whose values are to be marked.
Along the yaxis, choose an appropriate scale considering the given values.
Now, make the points
Join each point with the successive point using a ruler. Thus, a line graph is obtained
Solve Examples on Line Graph:
1. The following table gives the information of the sum scored by McKay in 10 matches. Represent this information using line graph.Match  1  2  3  4  5  6  7  8  9  10 
Runs Scored  80  30  50  90  40  60  75  20  15  90 
2. Mobile phones sold by a shop in a certain week are as follows:
Days  Mon.  Tues.  Wed.  Thurs.  Fri.  Sat. 
No. of Mobile Phones Sold  20  16  12  24  4  10 
Represent the above data by a line graph.
● Statistics
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