Provides a graphical means for looking at data dynamically (over time). Run charts often show patterns that do not appear in static displays of your data, such as histograms. The run chart is a useful tool for discovering evidence of influences on the process, all of which can be used to make process improvements
|When to Use||Purpose|
|Start of project||While performing a baseline analysis, you typically use a control chart to verify that the process was stable. The run chart is an additional tool that tests for patterns that may not be detected in a control chart, yet may often reveal clues for making process improvements.|
|Mid-project||The first rule of data analysis is to graph the data before running statistical tests. Whenever you collect data over time, you should also graph the data over time to examine its dynamic behavior. The run chart provides tests for trends, cycles, and other patterns.|
Numeric data (continuous or discrete) collected over time
You can use one of three ways to enter the data in Minitab:
The tests that appear in the run chart provide various insights into the process behavior over time.