Line Graph in Excel

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Line Graphs show behavior of a process over time. It is the first step in defining a problem to be solved.

Line graphs can show cycle time, defects or cost over time.

Line Graph in Exce

If you add a line showing the average to the line graph, you have a Run chart.

Line Graph with an average line is a Run Chart

If you add upper and lower control limits and 1- and 2-sigma lines to your line graph, you have a control chart. A control chart will help you perform stability analysis on your data to identify potential problems and trends.

Line graph with sigma lines is a control chart

Line graphs, run charts, control charts and other Six Sigma and SPC charts are made easy using the QI Macros for Excel software.

 

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