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):