Plan Do Check Act
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PDCA, sometimes called PDSA, the "Deming Wheel,"
or "Deming Cycle," was developed by renowned
management consultant Dr William Edwards Deming
in the 1950s.
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Deming himself called it the
"Shewhart Cycle," as his
model was based on an idea
from his mentor, Walter
Shewhart.
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Deming wanted to create a
way of identifying what
caused products to fail to
meet customers' expectations.
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His solution helps businesses to develop hypotheses
about what needs to change, and then test these in a
continuous feedback loop.
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PDCA (Plan, Do, Check, Act) is
an iterative four-step
methodology for continuous
improvement of
products/processes by
following the four steps
repeatedly
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Plan (Plan an activity/ task/ New process or form
hypothesis)
- Do (implement the plan / Run experiments/ Do things)
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Check/Study (verify is expected results achieved? /
Evaluate results)
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Act (Either continue or review plan / Refine the
experiments)
