New Seven Q.C. Tools Training

The New Seven
Q.C. Tools
A Training Presentation on the N7
By Christopher Diaz

What are the
New Seven Q.C. Tools
 Affinity Diagrams
 Relations Diagrams
 Tree Diagrams
 Matrix Diagrams
 Arrow Diagrams
 Process Decision Program Charts
 Matrix Data Analysis

History of the
 Committee of J.U.S.E. - 1972
 Aim was to develop more QC
techniques with design approach
 Work in conjunction with original Basic
Seven Tools
 New set of methods (N7) - 1977
Slide 1 0f 2

History of the
 Developed to organize verbal data
diagrammatically.
 Basic 7 tools effective for data analysis,
process control, and quality
improvement (numerical data)
 Used together increases TQM
effectiveness
Slide 2 0f 2

What are the
Basic Seven Q.C. Tools?
 Flow Charts
 Run Charts
 Histograms
 Pareto Diagrams
 Cause and Effect Diagrams
 Scatter Diagrams
 Control Charts

Relation Between New Seven
Q.C. Tools and Basic Seven
Tools
FACTS
Data
Numerical Data Verbal Data
Organize
The Seven New Tools
Information
The Basic Seven Tools
•Generate Ideas
•Formulate plans
•Analytical approach
Define problem after
collecting numerical data
Define problem before
collecting numerical data
Source: Nayatani, Y., The Seven New QC Tools (Tokyo, Japan, 3A Corporation, 1984)

Enhanced Capabilities
 Generate ideas
 Improve planning
 Eliminate errors and omissions
 Explain problems intelligibly
 Secure full cooperation
 Persuade powerfully
Benefits of Incorporating
 Organize verbal data
Slide 1 0f 4

Enhanced Keys to Organizational Reform
 Clarify the desired situation
 Prioritize tasks effectively
 Proceed systematically
 Anticipate future events
 Change proactively
 Get things right the first time
 Assess situations from various angles
Slide 2 0f 4

Five Objectives of Organizational Reform
which will establish a Culture that:
 Gives importance to planning
 Stresses the importance of the process
 Prioritizes tasks
 Encourages everyone to think
systematically
Slide 3 0f 4
 Identifies problems

Unstructured Problem [must be put into solvable form]
Problem is mapped
Problem becomes
obvious to all
Problem is in solvable form
Slide 4 0f 4
The Seven New Tools
Thoughts are
easily organized
Things go well
People understand
problem
Cooperation is
obtained
Countermeasures
are on target
Problem becomes
obvious to all
Nub of problem
is identified
Problem can be
clearly articulated
Plans are
easily laid
Nothing is
omitted

Affinity Diagrams
For Pinpointing the Problem in a Chaotic
Situation and Generating Solution Strategies
 Gathers large amounts of intertwined
verbal data (ideas, opinions, issues)
 Organizes the data into groups based
on natural relationship
 Makes it feasible for further analysis
and to find a solution to the problem.
Slide 1 0f 7

Affinity Diagrams
Advantages of Affinity Diagrams
 Facilitates breakthrough thinking and
stimulate fresh ideas
 Permits the problem to be pinned down
accurately
 Ensures everyone clearly recognizes the
problem
 Incorporates opinions of entire group
Slide 2 0f 7

Affinity Diagrams
Advantages of Affinity Diagrams (cont.)
 Fosters team spirit
 Raises everyone’s level of awareness
 Spurs to the group into action
Slide 3 0f 7
Topic
Affinity Statement
Data Card
Data Card
Data Card
Data Card
Affinity Statement
Data Card
Data Card
Data Card
Data Card
Affinity Statement
Data Card
Data Card
Data Card
Affinity Statement
Data Card
Data Card
Data Card
Data Card
Data Card Data Card

Affinity Diagrams
Constructing an Affinity Diagram
Group Method Approach
Slide 4 0f 7
 Select a topic
 Collect verbal data by brainstorming
 Discuss info collected until everyone
understands it thoroughly
 Write each item on separate data card
 Spread out all cards on table

Affinity Diagrams
Group Method Approach (cont.)
Slide 5 0f 7
 Move data cards into groups of similar
themes (natural affinity for each other)
 Combine statements on data cards to
new Affinity statement
 Make new card with Affinity statement
 Continue to combine until less than 5
groups

Affinity Diagrams
Slide 6 0f 7
 Lay the groups outs, keeping the affinity
clusters together
Next, complete the diagram

Affinity Diagrams
Completing an Affinity Diagram
Slide 7 0f 7
Topic
Affinity Statement
Data Card
Data Card
Data Card
Data Card
Affinity Statement
Data Card
Data Card
Data Card
Data Card
Affinity Statement
Data Card
Data Card
Data Card
Affinity Statement
Data Card
Data Card
Data Card
Data Card
Data Card Data Card

Relations Diagrams
For Finding Solutions Strategies by Clarifying
Relationships with Complex Interrelated Causes
 Resolves tangled issues by unraveling
the logical connection
 Allows for “Multi-directional” thinking
rather than linear
 Also known as Interrelationship
diagrams
Slide 1 0f 7

Relations Diagrams
Advantages of Relations Diagrams
 Useful at planning stage for obtaining
perspective on overall situation
 Facilitates consensus among team
 Assists to develop and change people’s
thinking
 Enables priorities to be identified
accurately
Slide 2 0f 7

Relations Diagrams
Advantages of Relations Diagrams (cont.)
 Makes the problem recognizable by
clarifying the relationships among causes
Slide 3 0f 7
Why doesn’t
X happen?
Primary Cause
Primary Cause
Primary Cause
Primary Cause
Tertiary
Cause
Secondary
Cause
Secondary
Cause
Secondary
Cause
Secondary
Cause
Tertiary
Cause
4th level
Cause
Tertiary
Cause
Tertiary
Cause
4th level
Cause
5th level
Cause
6th level
Cause
Tertiary
Cause
Secondary
Cause

Relations Diagrams
Constructing a Relations Diagram
Slide 4 0f 7
 Express the problem in form of “Why
isn’t something happening?”
 Each member lists 5 causes affecting
problem
 Discuss info collected until everyone
understands it thoroughly
 Write each item on a card

Relations Diagrams
Slide 5 0f 7
 Move cards into similar groups
 Asking why, explore the cause-effect
relationships, and divide the cards into
primary, secondary and tertiary causes
 Connect all cards by these relationships
 Further discuss until all possible causes
have been identified

Relations Diagrams
Slide 6 0f 7
 Connect all related groups
 Review whole diagram looking for
relationships among causes

Relations Diagrams
Completing a Relations Diagram
Slide 7 0f 7
Why doesn’t
X happen?
Primary Cause
Primary Cause
Primary Cause
Primary Cause
Tertiary
Cause
Secondary
Cause
Secondary
Cause
Secondary
Cause
Secondary
Cause
Tertiary
Cause
4th level
Cause
Tertiary
Cause
Tertiary
Cause
4th level
Cause
5th level
Cause
6th level
Cause
Tertiary
Cause
Secondary
Cause

Tree Diagrams
For Systematically Pursuing the Best Strategies
for Attaining an Objective
 Develops a succession of strategies for
achieving objectives
 Reveals methods to achieve the results.
 Also known as Systematic diagrams or
Dendrograms
Slide 1 0f 5

Tree Diagrams
Advantages of Tree Diagrams
 Systematic and logical approach is less
likely that items are omitted
 Facilitates agreement among team
 Are extremely convincing with strategies
Slide 2 0f 5
To
Accomplish
Primary means
Constraints
Secondary means
Secondary means
3rd means
3rd means
3rd means
3rd means
4th means
4th means
4th means
4th means
4th means
4th means
4th means

 Discuss means of achieving objective
(primary means, first level strategy)
Tree Diagrams
Constructing a Tree Diagram
Slide 3 0f 5
 Write Relations Diagram topic (Objective
card)
 Identify constraints on how objective
can be achieved
 Take each primary mean, write ob-
jective for achieving it (secondary means)

Tree Diagrams
Constructing an Tree Diagram
Slide 4 0f 5
 Continue to expand to the fourth level
 Review each system of means in both
directions (from objective to means and means to
objective)
 Add more cards if needed
 Connect all levels

Tree Diagrams
Completing a Tree Diagram
Slide 5 0f 5
To
Accomplish
3rd means
3rd means
Primary means
3rd means
3rd means
Constraints
Primary means
Secondary means
Secondary means
Secondary means
Secondary means
3rd means
3rd means
3rd means
3rd means
4th means
4th means
4th means
4th means
4th means
4th means
4th means
4th means
4th means
4th means
4th means
4th means

Matrix Diagrams
For Clarifying Problems by “Thinking
Multidimensionally”
 Consists of a two-dimensional array to
determine location and nature of
problem
 Discovers key ideas by relationships
represented by the cells in matrix.
Slide 1 0f 7

Matrix Diagrams
Advantages of Matrix Diagrams
 Enable data on ideas based on extensive
experience
 Clarifies relationships among different
elements
 Makes overall structure of problem
immediately obvious
 Combined from two to four types of
diagrams, location of problem is clearer.
Slide 2 0f 7

Matrix Diagrams
Advantages of Matrix Diagrams (cont.)
 5 types: L-shaped, T-shaped, Y-shaped, X-
shaped, and C-shaped
Slide 3 0f 7
O O =1 O =4 Principal
O =2 O X =5 O Subsidiary
=3 X =6
Efficacy
Practicability
Rank
Site
QC
circle
Section/Plant
QC
circle
supporter
Section/Plant
Manager
Leader
Member
4th lev
el means
from Tree diagram O O 1 O
4th lev
el means
from Tree diagram O O 1 O Hold 4 times/month
4th lev
el means
from Tree diagram O 3 O At ev
ery meeting
4th lev
el means
from Tree diagram O 2 O
4th lev
el means
from Tree diagram O X 5 O At least 3 times/year/person
4th lev
el means
from Tree diagram O O 1 O O
4th lev
el means
from Tree diagram 4 O
Evaluation Responsibilities
Remarks

Matrix Diagrams
Constructing a Matrix Diagram
Slide 4 0f 7
 Write final-level means from Tree
diagram forming vertical axis
 Write in Evaluation categories (efficacy,
practicability, and rank) on horizontal axis.
 Write names along horizontal axis
 Examine final-level means to identify
whom will implement them

Matrix Diagrams
Constructing a Matrix Diagram (cont.)
Slide 5 0f 7
 Label group of columns as “Responsibilities”
 Label right-hand end of horizontal axis
as “Remarks”
 Examine each cell and insert the
appropriate symbol:
Efficacy: O=good, =satisfactory, X=none
Practicability: O=good,=satisfactory, X=none

Matrix Diagrams
Constructing a Matrix Diagram (cont.)
Slide 6 0f 7
 Fill out remarks column and record
meanings of symbol
 Examine cells under Responsibility
Columns, insert double-circle for
Principal and single-circle for Subsidiary
 Determine score for each combination
of symbols, record in rank column

Matrix Diagrams
Completing a Matrix Diagram
Slide 7 0f 7
O O =1 O =4 Principal
O =2 O X =5 O Subsidiary
=3 X =6
Efficacy
Practicability
Rank
Site
QC
circle
Section/Plant
QC
circle
supporter
Section/Plant
Manager
Leader
Member
4th lev
el means
4th lev
el means
from Tree diagram O O 1 O Hold 4 times/month
4th lev
el means
from Tree diagram O 3 O At ev
ery meeting
4th lev
el means
4th lev
el means
from Tree diagram O X 5 O At least 3 times/year/person
4th lev
el means
from Tree diagram O O 1 O O
4th lev
el means
from Tree diagram 4 O
4th lev
el means
4th lev
el means
4th lev
el means
Evaluation Responsibilities
Remarks

Arrow Diagrams
For Working Out Optimal Schedules and
Controlling Them Effectively
 Shows relationships among tasks
needed to implement a plan
 Network technique using nodes for
events and arrows for activities
 Used in PERT (Program Evaluation and Review
Technique) and CPM (Critical Path Method)
Slide 1 0f 7

Arrow Diagrams
Advantages of Arrow Diagrams
 Allows overall task to viewed and potential
snags to be identified before work starts
 Leads to discovery of possible
improvements
 Makes it easy to monitor progress of work
 Deals promptly with changes to plan
 Improves communication among team
Slide 2 0f 7

Arrow Diagrams
Advantages of Arrow Diagrams (cont.)
 Promotes understanding and agreement
among group
Slide 3 0f 7
Strategy
1
Constraints
Activity
2
4
3 5 9
6 8
7
10 13
12
11

Arrow Diagrams
Constructing an Arrow Diagram
Slide 4 0f 7
 From strategies on Tree diagram, select
one (Objective of Arrow Diagram)
 Identify constraints to Objective
 Write all essential activities on separate
cards
 List all activities necessary to achieving
Objective

Arrow Diagrams
Constructing an Arrow Diagram (cont.)
Slide 5 0f 7
 Organize cards in sequential order of
activities
 Remove any duplicate activities
 Review order of activities, find
sequence with greatest amount of
activities
 Arrange parallel activities

Arrow Diagrams
Constructing an Arrow Diagram (cont.)
Slide 6 0f 7
 Record names and other necessary
information
 Examine path, number nodes in
sequence from left to right

Arrow Diagrams
Completing an Arrow Diagram
Slide 7 0f 7
Strategy
1
Constraints
Activity
2
4
3 5 9
6 8
7
10 13
12
11

Process Decisions Program
Charts
For Producing the Desired Result from Many
Possible Outcomes
 Used to plan various contingencies
 Used for getting activities back on track
 Steers events in required direction if
unanticipated problems occur
 Finds feasible counter measures to
overcome problems
Slide 1 0f 7

Advantages of Process Decisions Program
Charts (PDPC’s)
 Facilitates forecasting
 Uses past to anticipate contingencies
 Enables problems to pinpointed
 Illustrates how events will be directed to
successful conclusion
 Enables those involved to understand
decision-makers intentions
Slide 2 0f 7
Charts

Advantages of PDPC’s (cont.)
 Fosters cooperation and communication in
group
 Easily modified and easily understood
Slide 3 0f 7
Charts
Start
GOAL
YES
YES
NO
NO
NO
NO
NO
YES
NO
NO

Constructing a PDPC
Slide 4 0f 7
 Select a highly effective, but difficult
strategy from the Tree diagram
 Decide on a goal (most desirable outcome)
 Identify constraints of objective
 Identify existing situation (Starting point)
Charts
 List activities to reach goal and potential
problems with each activity

Constructing an PDPC (cont.)
Slide 5 0f 7
 Review list. Add extra activities or
problems not thought of previously
 Prepare contingency plan for each step
and review what action is needed if
step is not achieved
 Examine carefully to check for
inconsistencies and all important factors
are included
Charts

Constructing an PDPC (cont.)
Slide 6 0f 7
 Examine to make sure all contingency
plans are adequate
Charts

Completing a PDPC
Slide 7 0f 7
Charts
Start
GOAL
YES
YES
NO
NO
NO
NO
NO
YES
NO
NO
Source: Nayatani,Y., The SevenNewQC Tools (Tokyo, Japan, 3A Corporation, 1984)

Matrix Data Analysis
Principal Component Analysis
 Technique quantifies and arranges data
presented in Matrix
 Based solely on numerical data
 Finds indicators that differentiate and
attempt to clarify large amount of
information
Slide 1 0f 6

Advantages of Principal Component Analysis
 Can be used in various fields (market surveys,
new product planning, process analysis)
 Can be when used when Matrix diagram
does not give sufficient information
 Useful as Prioritization Grid
Slide 2 0f 6

Constructing a Prioritization Grid
Source: Foster, S., Managing Quality (Upper Saddle River, NJ: Prentice Hall, 2001)
Slide 3 0f 6
 Determine your goal, your alternatives,
and criteria for decision
 Place selection in order of importance
 Sum individual ratings to establish
overall ranking (Divide by number of options
for average ranking)
 Apply percentage weight to each option
(all weights should add up to 1)

Constructing a Prioritization Grid (cont.)
Slide 4 0f 6
 Rank order each option with respect to
criterion (Average the rankings and apply a
completed ranking)
 Multiply weight by associated rank in
Matrix (in example, 4 is best, 1 is worst)
 Result is Importance Score
 Add up Importance Scores for each
option

Constructing a Prioritization Grid (cont.)
Slide 5 0f 6
See completed the diagram
 Rank order the alternatives according to
importance

Completing a Prioritization Grid
Slide 6 0f 6
Cost Reliability
Options
Design A
.30 .20
3 3
.90 .60 3.2 1 (tie)
Design B
.40 .10
4 1
1.6 .10 3.0 2
Design C
.25 .25
2 4
.50 1 2.5 3
Design D
.10 .20
1 3
.10 .60 3.2 1 (tie)
1.05 .75
.26 .19
2 4
Importance
Sum Score
Option
Ranking
(least important)
Strength
Importance score
Rank
Percentage weight
Percentage weight
Rank
Importance score
Percentage weight
Rank
Importance score
Percentage weight
Rank
Importance score
Sum of weights
Average weight
Criterion Ranking
Customer Acceptance
(most important)
.40
4
1.6
.30
3
.90
.25
1
.25
0.3
3
.90
1.25
2
.40
.25
.75
.10
1
.10
.20
.95
.24
3
Criteria
.40
4
3
1.6
.31
1

Review
 Affinity Diagrams
 Relations Diagrams
 Tree Diagrams
 Matrix Diagrams
 Arrow Diagrams
 Process Decision Program Charts
 Matrix Data Analysis

Mental Attitudes
- Keen awareness to the actual problem
- Eagerness to solve problem
- Be highly motivated for the challenge
Keys to Successfully Using the
Slide 1 0f 5
Four Specific Keys
 Understand the problem
 Select the right tool for the job
 Obtain appropriate verbal data
 Interpret analytical results

Slide 2 0f 5
 Understand the problem
Stage 1 - problem is unclear and not obvious
what exact issue should be addressed
Stage 2 - problem is obvious, but causes unknown
explore causes and single out valid ones
Stage 3 - problem and causes are known
required action is unknown
strategies and plan must be developed
4 Specific Keys

Slide 3 0f 5
 Selecting Right tool for the Job
Stage 1 - Collect verbal information on events
(Affinity Diagram)
Stage 2 - Choose tool to identify causes
(Relations Diagram / Matrix Diagram)
Stage 3 - List strategies and activities
(Tree Diagram / Relations Diagram)
Plan actual activities
(Arrow Diagram / PDPC Chart)
4 Specific Keys (cont.)

Slide 4 0f 5
 Obtaining appropriate verbal data
Three types of verbal data:
- Facts; factual observations expressed in words
- Opinions; factual information colored by opinion
- Ideas; New concepts created by analyzing facts
.Group Discussions:
- Ensures common understanding
- All data should be without bias or distortion
- Data should fit objective of the analysis

Slide 5 0f 5
 Interpreting Analytical Results
Information must be obtained for accomplishing
objectives from:
- Completed diagrams; or
- Process of completing diagrams
Analyze actual information obtained:
- Prepare summarized report with findings,
conclusions, and processes used
- Check if necessary data has been obtained, if not
- Discover the cause and take appropriate action

Practical Application of
Slide 1 0f 5
Complete the following Relations Diagram
- Review notes for clarity
- Get in groups of 4-5 per table (work as a team!)
- Topic - “Using the New Seven QC Tools skillfully”
- “Cause cards”- will be provided (not categorized)
- Arrange cards to complete diagram
(some hints have been provided)
Example; Relations Diagram
”Abilities Required for Applying New Seven QC Tools”

Slide 2 0f 5
Use N7
Skillfully
Primary
Cause
Primary
Cause
Primary
Cause
Primary
Cause

Slide 3 0f 5
Cause Statements (hints are in yellow)
A Interpret data clearly N Understand seriousness of problem
B Select appropriate tool O Think flexibly from various standpoints
C Think systematically P Obtain appropriate verbal data
D Give opinions Q Expose core of problem
E Know what the problem is R Communicate well
F Extract necessary information S Accurately understand real problem
G Collect reliable verbal data T Have excellent intuition
H Think multidimensionally U See to heart of problem
I Obtain facts V Select appropriate type of verbal data
J Interpret analytical results W Think in terms of word-based diagram
K Generate ideas X Express genuine thoughts
L Know that distorted data is useless Y Hear and respect other's opinions
M Grasp overall pictured Z Generate highly accurate verbal data

Slide 4 0f 5
Use N7
Skillfully
Primary
Cause
Primary
Cause
Primary
Cause
B
T
R
Y
F
I
L

Slide 5 0f 5
Solution for ”Abilities Required for Applying New Seven QC Tools”
Use N7
Skillfully
E
W J
P
B
T
H R
C
Z
Y
O
A
M
F S U
N
V
K
D
I Q
L
X
G

Summary
1- Provide Training in Thinking
2- Raise People’s Problem Solving Confidence
3- Increase People’s Ability to Predict Future Events
Benefits of New Seven Q.C. Tools
1- Express verbal data diagrammatically
2- Make information visible
3- Organize information intelligibly
4- Clarify overall picture and fine details
5- Get more people involved
Roles of New Seven Q.C. Tools

Bibliography
Foster, Thomas. Managing Quality. An Integrative Approach.
Upper Saddle River : Prentice Hall, 2001.
Nayatani, Yoshingobu, Eiga, Toru, Futami, Ryoji, Miyagawa,
Hiroyuki, and Loftus, John. The Seven New QC Tools: Practical
Applications for Managers. Tokyo : 3A Corporation, 1994.
“TQM: The 9 TQM Tools.” Internet
http://www.iqd.com/pfttools.htm.

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