投稿日:2024年10月31日

For new leaders in the quality assurance department! A step-by-step guide to effective 5-5 analysis

What is 5-5 Analysis?

5-5 Analysis is a problem-solving technique commonly used in quality assurance departments to identify root causes of issues effectively.
The method involves repeatedly asking “why” until you have drilled down to the fundamental cause of a problem.

The name 5-5 refers to asking “why” five times, although the analysis might require fewer or more than five iterations.

This structured approach helps teams focus on eliminating root problems rather than merely addressing symptoms.

Why is 5-5 Analysis Important?

5-5 Analysis is crucial for several reasons:

First, it promotes a deep understanding of how and why a problem exists.
Second, it encourages collaboration as team members gather insights by exploring all angles of the issue.
Finally, it ensures that solutions are sustainable, preventing the recurrence of the same issues.

By consistently employing 5-5 Analysis, teams can ensure that their processes remain robust and resilient, ultimately enhancing product quality and customer satisfaction.

Preparation for a 5-5 Analysis

Step 1: Define the Problem

Before starting a 5-5 Analysis, it’s essential to clearly define the problem at hand.
A well-defined issue sets the stage for effective exploration and resolution.
Ensure that the problem is specific and measurable to focus your analysis on the right target.

Step 2: Assemble the Right Team

Having the right set of people involved in the analysis can make a significant difference.
Include team members who have a direct stake in the issue or are subject-matter experts.
Diverse perspectives will help you uncover all potential causes and increase the credibility of your findings.

Step 3: Gather Relevant Information

Collect all necessary data related to the problem.
This includes any existing reports, metrics, prior corrective actions, and observations.
A solid foundation of information supports accurate and comprehensive analysis.

Conducting the 5-5 Analysis

Step 4: Start Asking “Why”

Once your groundwork is laid, begin by asking the first “why” related to the problem.
Write down the answer, and then pose another “why” question based on the response received.
Repeat this process to continue peeling back layers of the issue.

Step 5: Drill Down to the Root Cause

Continue asking questions until you reach a point where no deeper inquiry is possible, typically after four or five rounds.
The root cause should be something actionable, meaning that a solution can realistically be implemented to address it.

Step 6: Validate the Root Cause

Before proceeding, the identified root cause should be validated through additional data, observations, or expert opinions.
Validation ensures that the analysis didn’t lead the team astray and that the true underlying issue has been pinpointed.

Developing a Solution

Step 7: Brainstorm Solutions

With the root cause validated, focus on developing solutions that address this specific issue.
Encourage creativity and broad thinking during this stage, generating as many potential solutions as possible.

Step 8: Select the Best Solution

Evaluate the brainstormed solutions and choose the best option based on feasibility, cost, time, and expected impact.
Ensure that the solution doesn’t introduce new problems or pass the issue to another part of the process.

Step 9: Plan and Implement

Create a detailed action plan for implementing the chosen solution.
This plan should include steps, timelines, responsibilities, and any necessary resources.
Once the plan is in place, proceed with implementation, monitoring progress closely.

Monitoring and Follow-up

Step 10: Evaluate the Results

After implementing the solution, assess its effectiveness.
Determine whether the intervention resolved the root cause and led to a sustainable improvement.
Measurements and metrics collected earlier should serve as benchmarks for comparison.

Step 11: Document and Share Learnings

Regardless of the outcome, document the entire 5-5 Analysis process, including the problem, root cause, solution, and results.
Share these learnings with the relevant stakeholders to propagate knowledge and prevent similar issues in the future.

Step 12: Continuous Improvement

Finally, embed the practice of 5-5 Analysis into your department’s continuous improvement efforts.
Encourage teams to use this tool regularly to maintain quality standards and respond agilely to new challenges as they arise.

The ongoing use of 5-5 Analysis ensures that the organization is always learning, evolving, and committed to excellence.

By following this step-by-step guide, new leaders in the quality assurance department can confidently and effectively utilize 5-5 Analysis.

This enhances problem-solving capabilities, fostering a culture of quality that benefits the entire organization.

資料ダウンロード

QCD調達購買管理クラウド「newji」は、調達購買部門で必要なQCD管理全てを備えた、現場特化型兼クラウド型の今世紀最高の購買管理システムとなります。

ユーザー登録

調達購買業務の効率化だけでなく、システムを導入することで、コスト削減や製品・資材のステータス可視化のほか、属人化していた購買情報の共有化による内部不正防止や統制にも役立ちます。

NEWJI DX

製造業に特化したデジタルトランスフォーメーション(DX)の実現を目指す請負開発型のコンサルティングサービスです。AI、iPaaS、および先端の技術を駆使して、製造プロセスの効率化、業務効率化、チームワーク強化、コスト削減、品質向上を実現します。このサービスは、製造業の課題を深く理解し、それに対する最適なデジタルソリューションを提供することで、企業が持続的な成長とイノベーションを達成できるようサポートします。

オンライン講座

製造業、主に購買・調達部門にお勤めの方々に向けた情報を配信しております。
新任の方やベテランの方、管理職を対象とした幅広いコンテンツをご用意しております。

お問い合わせ

コストダウンが利益に直結する術だと理解していても、なかなか前に進めることができない状況。そんな時は、newjiのコストダウン自動化機能で大きく利益貢献しよう!
(Β版非公開)

You cannot copy content of this page