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School of Lean

The Seven Quality Control Tools

The 7 Qual­i­ty Con­trol Tools were devel­oped by Dr. Kaoru Ishikawa, an engi­neer­ing pro­fes­sor at the Uni­ver­si­ty of Tokyo. They’re essen­tial­ly a set of graph­i­cal tech­niques that can be used to iden­ti­fy and fix prob­lems that under­mine prod­uct or process quality.

Before we dig in, it helps to con­sid­er qual­i­ty con­trol (QC) from Dr. Ishikawa’s per­spec­tive. He defined QC as the process of design­ing, devel­op­ing, pro­duc­ing, mar­ket­ing, and main­tain­ing offer­ings that give the most val­ue to con­sumers through the most cost-effec­tive means possible. 

While you may asso­ciate QC with the pro­duc­tion line, Dr. Ishikawa believed Total Qual­i­ty Con­trol (TQC) should be applied to all func­tions — from the admin desk and sales to the C‑suite, mar­ket­ing, and production.

The 7 QC Tools pro­vide Lean prac­ti­tion­ers with a sys­tem­at­ic approach for iden­ti­fy­ing and trou­bleshoot­ing qual­i­ty issues.

In this online course, you’ll learn the sev­en qual­i­ty con­trol tools and how to use them with­in your organization.

What You’ll Learn in This 7 Quality Control Tools Online Training Course

In this video course series, Lean expert Ron Pereira walks par­tic­i­pants through each of the 7 Qual­i­ty Con­trol Tools. Here’s a quick overview of what’s on the syllabus:

  • Graphs. In the first few seg­ments, Ron will show you how to use graphs to gath­er, arrange, and share data, as well as com­pare quan­ti­ties or quan­ti­ty changes and make judgments.
  • Check­sheet. The check­sheet is used to gath­er and arrange data by type to eval­u­ate qual­i­ty. Ron will show you how to use this sim­ple yet pow­er­ful tool to deter­mine whether jobs have been com­plet­ed with­out any issues, and how to pre­vent errors from hap­pen­ing in the first place.
  • Pare­to Chart. Pare­to charts clas­si­fy defects and prob­lems by type, with quan­ti­ties pre­sent­ed in descend­ing order. Ron will teach learn­ers how to use Pare­to charts to iden­ti­fy pri­or­i­ties and deter­mine which para­me­ters stand to make the biggest impact.
  • Cause & Effect Dia­gram. Cause-and-effect dia­grams are used to help work­ers iden­ti­fy and under­stand the root cause of a prob­lem so that they can solve it quickly.
  • Scat­ter Dia­gram. Scat­ter dia­grams rep­re­sent the val­ue of two dif­fer­ent vari­ables. Here, Ron explains how scat­ter dia­grams can be used to under­stand the rela­tion­ships between vari­ables along­side deter­min­ing whether or not there’s correlation.
  • His­togram. His­tograms are charts designed to rep­re­sent dis­tri­b­u­tion by the mean and take on dif­fer­ent shapes based on the con­di­tion of the dis­tri­b­u­tion. You’ll learn to cal­cu­late process capa­bil­i­ty (Cp) and per­for­mance capa­bil­i­ty (Cpk) and cre­ate histograms.
  • Con­trol Chart. Final­ly, Ron will show par­tic­i­pants how to use a con­trol chart to mon­i­tor any oper­a­tional process’s per­for­mance and deter­mine how sta­ble and pre­dictable that process is. He’ll also teach learn­ers how to use this chart to spot com­mon caus­es of variation.

Benefits of Gemba Academy’s 7 Quality Control Tools Training Course

This course series aims to help teams make qual­i­ty con­trol a way of life, and by exten­sion, will help reduce defects, waste, and oth­er qual­i­ty issues. 

Long-term prac­ti­tion­ers can expect to see improved cus­tomer sat­is­fac­tion, trust, and last­ing loy­al­ty. Inter­nal­ly, con­sis­tent QC prac­tices allow orga­ni­za­tions to reduce costs by elim­i­nat­ing rework, delays, and han­dling complaints. 

Bot­tom line: Mas­ter­ing QC has a direct impact on both rep­u­ta­tion and rev­enue. This online train­ing course gives learn­ers the tools, tem­plates, and con­text for mak­ing that happen.

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Get a feel for Gem­ba Academy’s approach to Lean learn­ing by watch­ing the first video in each coarse for free. Check out the intro­duc­tion to the sev­en qual­i­ty con­trol tools online train­ing course today.