In the Measure and Analyze steps, the team decides which KPIVs and KPOVs to study,
determines what data to collect and how to display and analyze them, identifies potential
sources of variability, and determines how to interpret the data they obtained. In the Improve
step, they turn to creative thinking about the specific changes that can be made in the process
and other things that can be done to have the desired impact on process performance.
A broad range of tools can be used in the Improve step. Redesigning the process to improve
work flow and reduce bottlenecks and work-in-process will make extensive use of flow charts
and/or value stream maps. Sometimes mistake-proofing (designing an operation so that it can
be done only the right way) an operation will be useful. Designed experiments are probably the
most important statistical tool in the Improve step. Designed experiments can be applied either
to an actual physical process or to a computer simulation model of that process, and can be used
both for determining which factors influence the outcome of a process and for determining the
optimal combination of factor settings.
The objectives of the Improve step are to develop a solution to the problem and to pilot test
the solution. The pilot test is a form of confirmation experiment; it evaluates and documents the
solution and confirms the solution attains the project goals. This may be an iterative activity,
In the Measure and Analyze steps, the team decides which KPIVs and KPOVs to study,
determines what data to collect and how to display and analyze them, identifies potential
sources of variability, and determines how to interpret the data they obtained. In the Improve
step, they turn to creative thinking about the specific changes that can be made in the process
and other things that can be done to have the desired impact on process performance.
A broad range of tools can be used in the Improve step. Redesigning the process to improve
work flow and reduce bottlenecks and work-in-process will make extensive use of flow charts
and/or value stream maps. Sometimes mistake-proofing (designing an operation so that it can
be done only the right way) an operation will be useful. Designed experiments are probably the
most important statistical tool in the Improve step. Designed experiments can be applied either
to an actual physical process or to a computer simulation model of that process, and can be used
both for determining which factors influence the outcome of a process and for determining the
optimal combination of factor settings.
The objectives of the Improve step are to develop a solution to the problem and to pilot test
the solution. The pilot test is a form of confirmation experiment; it evaluates and documents the
solution and confirms the solution attains the project goals. This may be an iterative activity,
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