5 Evils
The weaknesses of a problem that should be eliminated through proactive or active
management approach in order to satisfy customer or the next process.
The evils contain Defects, Mistakes, Delay, Waste and Accident/injury.
5 M
The Categories that are used to find out the root causes of a problem when one uses a cause-and-effect (Ishikawa) diagram.
The 5 Ms are Man, machine, Method, Material and Management.
5 S
The activities that bring bottom-up mobilization (total participation), that is to mobilize workers to adhere to standards and see the benefits of standardization for long-term (not just immediate) improvement through CAPD (CheckActPlanDo) application.
5S activities contain:
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Seiri: Sort and remove unnecessary materials from workplace.
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Seiton: Organize and store materials in an orderly fashion.
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Seiketsu: Keep surroundings clean.
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Seiso: Keep tools or equipment in a constantly clean condition and operate them properly.
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Shitsuke: Train-self control (practice self-discipline).
5W 1H
A total quality concept that consists of Who, What, Where, When, Why, and How. One uses four of these Ws (who, what, where, when) and the one H to dig for detail, plow through emotion and dissect inference and judgment to get to the underlying facts and guide statements down the ladder of abstraction.
The following example shows the form of those Ws and H:
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Who: who does it, who should do it, who else can do it?
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What: what to do, what is being done, what can be done?
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Where: where to do it, where is it done, where else should it be done?
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When: when to do it, when is it done, when else should it be done?
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How: how to do it, how is it done, how should it be done, how can this method be used elsewhere?
The last W, Why, is often being asked five times so that one can get to the real facts of a problem.
5 Why
When analyzing the causes of a problem, a sequence of WHYs are asked to diagnose the possible root causes for the problem. The steps of asking are from general to detail, step by step, keep asking why and find out the root causes of the problem. By doing so, we can then identify the major causes to solve the problem.