Measurement phase insight
https://www.linkedin.com/in/rodnie-sabal-647273193/
Measurement Phase Insight – Lean Six Sigma
This week, I focused on learning about Process Tolerance (Range) in the Measurement Phase of Lean Six Sigma.
Process Tolerance, or Range, is the difference between the maximum and minimum values in a dataset. It helps quantify the spread or variation in a process — showing how stable (or unstable) performance really is.
One key takeaway for me is that even small amounts of variation can signal big problems when they exceed customer expectations. In the Prime Time Pizza project, for example, the number of late deliveries per month ranged from 11 to 19 (a tolerance/range of 8), while the monthly defect percentage swung from 28.4% to 74.4% — a very wide range that highlights inconsistent performance despite the 30-minute delivery guarantee.
In real-world applications, understanding process tolerance allows businesses to set realistic specification limits, identify when a process is out of control, and prioritize improvement efforts before variation leads to lost customers or revenue. For a pizza shop facing declining sales, measuring and tightening this range directly supports reducing late deliveries and restoring customer trust.
Looking forward to continuing to build these skills and apply them in practice.
#LeanSixSigma #ProcessImprovement #ContinuousImprovement #DataDriven
@Star Global College of Workforce Development