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What is line graph ?
Graphical device that displays quantitative information or illustrates relationships between two changing quantities(variables) with a line or curve that connects a series of successive data points. A grouped line graph compares a trend with on or more other trends, and shows if its rate of change is increasing, decreasing, fluctuating, or remaining constant. Line graphs are the most versatile and most extensively used family of graphs. Also called line chart.


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