LSSx.0 Wiki

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1 term

5 Whys Asking "why" repeatedly to trace a symptom back to the condition that produced it, rather than stopping at the first plausible explanation. Simple enough to run in a meeting, and the usual first step before heavier root-cause tools.

A

1 term

A3 Method A problem-solving format that constrains context, analysis, countermeasures and follow-up to a single page. The size limit is the method: it forces the thinking to be complete and legible rather than sprawling.

D

2 terms

Design of Experiments (DOE) Design of Experiments (DOE) is a structured statistical method for planning tests that estimate how process inputs affect a measured response, including interactions between inputs. An interaction occurs when the effect of one input depends on another input’s setting. In a sealing process, a team might test temperature and pressure at two levels each, producing […] DMAIC The five-phase improvement cycle — Define, Measure, Analyse, Improve, Control — that structures a Six Sigma project from framing the problem to holding the gain.

I

1 term

Ishikawa Diagram A structured way to lay out every possible cause of a problem across categories such as method, material, machine and manpower, so the analysis covers the field instead of settling on the first candidate.

P

1 term

Pareto Chart A ranked bar chart showing which causes account for most of the effect, based on the observation that a small share of causes usually drives the majority of problems. Used to decide where to act first when everything looks urgent.

R

1 term

Root Cause Analysis Working back from a symptom to the condition that produced it, so the fix removes the problem rather than the evidence of it.

S

1 term

Six Sigma Six Sigma is a method for improving processes by reducing variation. It treats every defect, delay or error as the product of a process that varies more than it should, and it uses data and statistics to find the causes of that variation and remove them. The name refers to a statistical target: a process […]