
1) Financial chart 2) Quality control tool
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https://www.crosswordclues.com/clue/line-chart

A line chart or line graph is a type of chart which displays information as a series of data points called `markers` connected by straight line segments. It is a basic type of chart common in many fields. It is similar to a scatter plot except that the measurement points are ordered (typically by their x-axis value) and joined with straight line.....
Found on
http://en.wikipedia.org/wiki/Line_chart

This is the simplest form of chart available to the technical analyst. An example would have time... <a target=_blank href='http://www.finance-glossary.com/terms/line-chart.htm?id=1614&ginPtrCode=00000&PopupMode=false' title='Read full definition of line chart'>more</a>
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http://www.finance-glossary.com/pages/home.htm
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