Six Sigma Tool Navigator: The Master Guide for Teams

2017-07-07 02:10:07

AKA

Cost of Quality Analysis

Classification

Analyzing/Trending (AT)

Tool description

The cost of quality technique can be used as a powerful tool to identify and break down the readily apparent and the more hidden costs of quality activities. Costs are associated with conformance (prevention and assessment activities) and nonconformance (internal and external failures) factors.

Typical application

To identify total quality costs of operations.

To anlayze quality costs for the purpose of discovering cost savings and process improvement opportunities.

To educate the work force on the cost of quality or lack of quality.

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

	Research/statistics
	Creativity/innovation
1	Engineering
	Project management
2	Manufacturing
	Marketing/sales
	Administration/documentation
	Servicing/support
3	Customer/quality metrics
4	Change management

links to other tools

before

Data Collection Strategy

Activity Cost Matrix

Interview Technique

Focus Group

Starbursting

after

Cost-Benefit Analysis

Balance Sheet

Presentation

Process Analysis

Run-It-By

Notes and key points

Estimating Cost of Quality (COQ):

Step-by-step procedure

STEP 1 A facilitator team brainstorms and lists all quality factors for the purpose of estimating total operational cost.

STEP 2 Team participants receive assignments to collect actual cost data wherever possible. Other costs for quality-related activities need to be estimated by the process owners or department managers.

STEP 3 The facilitator sorts costs into conformance and nonconformance. See example Cost of Quality (COQ) Measurement.

STEP 4 The team searches the cost data for the major cost items and discusses alternatives to lower these costs.

STEP 5 A list of potential cost-saving action items is drawn up. This could also be a list of potential process improvements to greatly reduce or eliminate quality-related costs.

STEP 6 Participants use the checklist in this example to generate other ideas for further consideration and analysis.

Example of tool application

Cost of Quality (COQ) Measurement