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Home >> Graphs >> Line Graph >>

Line Graph

Pictograph Bar Graph Double Bar Graph Histogram Pie Graph
Line Graph Difference between Bar Graph and Histogram

A Line Graph shows the variation in data that occurs over periods of time
Or we can say that:
A Line Graph displays data that changes continuously over periods of time.

The horizontal lines are known as x-axis and verticals lines are known as y-axis.

Example 1: The following table illustrates the sales of Mobile phones from 2010 to 2015. Draw a line graph from the below table

Year 2010 2011 2012 2013 2014
Mobile Phone Sales (in millions) 1 3 2 4 5


Solution: As per given question:
Year will be on x-axis and Mobile Phone Sales will be on y-axis (as shown below)



Steps for construction of line graph:

Step 1: During year 2010, mobile phone sale was 1 million. So draw two lines from both and highlight the point where both these lines intersect (as show below):



Step 2: During year 2011, mobile phone sale was 3 million. So draw two lines from both and highlight the point where both these lines intersect (as show below):



Step 3: During year 2012, mobile phone sale was 2 million. So draw two lines from both and highlight the point where both these lines intersect (as show below):



Step 4: During year 2013, mobile phone sale was 4 million. So draw two lines from both and highlight the point where both these lines intersect (as show below):



Step 5: During year 2014, mobile phone sale was 5 million. So draw two lines from both and highlight the point where both these lines intersect (as show below):



Step 6: Join all the blue highlighted point and we get the required line graph (as shown below):




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