Six Sigma Tool Navigator: The Master Guide for Teams

Tool 24: Case study

AKA

Case Analysis Method

Classification

Data Collecting (DC)

Tool description

The case study method is a systematic approach used to describe, analyze, and bring to the surface potential solutions to a problem situation or business issue of fair complexity. A case study stimulates critical thinking and requires researchers to apply their problem-solving and decision-making skills to develop recommendations in a case report.

Typical application

Problem-solving phase

Select and define problem or opportunity

Identify and analyze causes or potential change

Develop and plan possible solutions or change

Implement and evaluate solution or change

Measure and report solution or change results

Recognize and reward team efforts

Typically used by

1

Research/statistics

Creativity/innovation

Engineering

Project management

Manufacturing

3

Marketing/sales

Administration/documentation

Servicing/support

Customer/quality metrics

2

Change management

links to other tools

before

after

Notes and key points

Step-by-step procedure

Example of tool application

The Study of Motorola's Six Sigma Work Ethic

Research Material on the Concept of Six Sigma Quality

…Motorola, a recipient of the Malcolm Baldrige National Quality Award, established goals… to improve products and services… to achieve Six Sigma capability…a culture of continual improvements…total customer satisfaction…

Part of Researcher's Case Report

Conclusions The establishment of Six Sigma quality would indeed become a strong driving force to significantly increase customer satisfaction and act as an enable to reach world class status among competitors. Furthermore:
  • it would promote a common language and understanding of quality within the organization

  • it directly ties into a work ethic of TQM, ISO-9000, and Integrated Product Development Teams (IPDT)

  • As a powerful tool, it assists in cost and cycle time reduction, waste elimination, and attacks variation at the supplier, process, product, and service level

  • It supports the Malcolm Baldrige National Quality Award criteria

Recommendations The implementation of Six Sigma across the organization requires careful planning, effective training, and resource allocation for pilot studies, development of metrics, data collection/bases, and administrative procedures that include an organizational performance appraisal and reward system. The following reflect the basic considerations:
  • Communicate the Six Sigma Quality strategy and roll-out-plan. Start training core personnel.

  • Define the organization's products and services

  • Identify suppliers and determine needs to be met.

  • Determine desired customer characteristics and needs.

  • Baseline processes for creating products and services. Establish metrics and procedures.

  • Reduce variation, costs, cycle time, waste, and defects from the process.

  • Measure results for continuous improvement.

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