Line Graph
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 x-axis and vertical line is y-axis. Mark points at equal intervals along x-axis and write the names of the data items whose values are to be marked.
Along the y-axis, 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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Real Life Statistics
- Terms Related to Statistics
- Frequency Distribution of Ungrouped and Grouped Data
- Use of Tally Marks
- Class Limits in Exclusive and Inclusive Form
- Construction of Bar Graphs
- Mean
- Mean of the Tabulated Data
- Mode
- Median
- Construction of Pie Chart
- How to Construct a Line Graph?
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