Six Sigma Tool Navigator: The Master Guide for Teams

2017-07-07 02:10:07

AKA

Two-Dimensional Scatter Diagram

Classification

Data Collecting (DC)

Tool description

The two-dimensional survey grid is a powerful data collection tool that is superior to other one-dimensional survey research techniques in that it can be used effectively to establish baselines that would point to needed improvement. It is especially useful in determining existing customer satisfaction levels, identifying performance gaps, or checking perception of quality, morale, or any other people issues.

Typical application

To focus problem-solving or process-improvement efforts on concerns or issues most important to the customer.

To measure and compare performance for internal or external customers.

To translate and prioritize customer feedback.

To plot, rank, and interpret survey data for possible corrective action.

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

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

links to other tools

before

Audience Analysis

Needs Analysis

Data Collection Strategy

Surveying

Questionnaires

after

Consensus Decision Making

Gap Analysis

Interview Technique

Focus Group

Action Plan

Notes and key points

Scaling example: TQM Workshop Participant Survey

Step-by-step procedure

STEP 1 Develop a two-dimensional survey instrument with 10 to 12 questions covering three to four areas of concern. See example Two Dimensional Grid—Customer Satisfaction Survey.

STEP 2 Draw and designate grids for each question's related pair of response choice groups seen in the example as importance to customer by quality rated by customer with respective choices A–D.

STEP 3 Administer the survey, collect the response data and plot corresponding intersects on respective grids.

STEP 4 Assess scatter points (clusters) and determine if improvement action is required. For example, if a cluster of data points falls into quadrant four (Q4), problem-solving or improvement work needs to initiated.

STEP 5 Lastly, summarize the survey results and develop a proposed action plan.