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Lean Definition: Run Chart

 

A run chart is a tool used to show a change in a value over a period of time.

A run chart plots time on the X-axis (horizontal) and the value of the data on the Y-axis.

The run chart is useful in Lean, because it shows where changes occurred or how processes are trending.

A kaizen will frequently make a stepwise change, meaning that the slope of the line stays the same, but the values are ‘reset’ at a new level.

This run chart example from Whaddaya Mean I Gotta Be Lean? shows that happening on the 25th of March.

Run Chart Sample

A run chart can confirm that a project was successful, or that a process ‘broke.’

Changing trends on a run chart indicate a continuously changing condition. Things like growth or deterioration of a machines show up in this manner.

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