Comparison of Application & Applicability Problem Solving by 7 New QC Tools 7 New QC Tools help the managers address Strategic and Managerial Problems in 3 Stages Stage 1 - Clarifying the "Actual Problem" by (1) Affinity Diagram and (2) Matrix Data Analysis Stage 2 - Finding the "Real Root Cause" by (3) Relationship Diagram and (4) Matrix Diagram Stage 3 - Implementation Plan and "Risk Mitigation" by (5)Tree Diagram, (6) Arrow Diagram and (7) PDPC The 7 QC Tools (Basic) helps in problem solving when one deals with Quantitative / Numeric Data, where as 7 New QC Tools helps where there is Qualitative / Non-Numeric Data. Another major difference is that in 7 QC Tools (Basic) the problem is defined after collection of Data where as 7 New QC Tools helps to define the problem before data collection

1. 7QC Tools vs New 7 QC Tools
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Comparison of Application & Applicability
By Tetrahedron Manufacturing services Pvt Ltd

2. Understand Basic 7QC Tools and New 7QC Tools
Analytical
Approach
Define problem
before
collecting DATA
Organize
Information
DATA
1- Generate Ideas
2- Formulate Plan
Define problem
after
collecting DATA
Organize
Information
100 units.30 days..
8 hours…
10 workers…
2 Engineers etc.
Statements/Idea...
NO Numbers/
Quantities….
VERBAL
DATA
NUMERICAL
DATA
Basic 7QC
Tools
New 7QC
Tools
Similarities:
1- Both are graphics rather
than language based.
Differences:
1- New tools are more
relational and network
oriented
2- New tools may take more
practice to develop
proficiency.
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3. 7 QC & 7 New QC Tool Comparison
7 New QC
N7
Used to Analyze Non-Quantitative Information
Affinity Diagram
Grouping of the idea
of Brainstorming
Relation Diagram
Good to use if cause-and-
effect contains circulation
structure
Tree Diagram
Collection of plans and
methods systematically.
7 QC
Q7
Used to Analyze Quantitative Information
Pareto Chart
Combination of bar chart
and accumulation
distribution chart
Histogram
Graphs of Distribution for
1- D(dimension) data.
Process Flow Chart
Describe the process detail
with elementsmethods systematically.
Matrix Diagram
Express the strength of
relationship between two
things
Arrow Diagram
Good to show the
sequence of activities and
proper planning.
Process Decision
Program Chart (PDPC)
When info is incomplete
Matrix Data Analysis
Prioritizing between
several viable options.
with elements
Scatter Diagram
Graphs of Distribution for 2
data for relationship of two
characteristics
Cause and Effect
Diagrams
Systematic diagram of
cause and effect. Similar to
mind-mapping.
Check Sheet
A list of check points and
data collection
Control Chart
A type of line chart to
check the stability of the
variation of data.
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4. Choose your Right QC Tools at Right Time !!!!!!!!
UnderstandtheProblem
IdentifySolutions
PlanImplementation
Stage Condition When to Use 7 New QC Tool
Stage 1
The problem requiring a
solution is still unclear.
Collect Verbal information
on what’s happening
Affinity Diagram
Matrix Data Analysis
Stage 2
The problem is
obvious, but its causes
To identify the Causes Relationship Diagram
UnderstandtheProblem
IdentifySolutions
PlanImplementation
Stage 2 obvious, but its causes
are unknown When complex relationships
exist among the many causes
of a single result
Matrix Diagram
Stage 3
The problem and its
causes are understood,
but the required action
is not known
Plan the activities required to
solve the problem
Tree Diagram
For Scheduling the activities Arrow Diagram
when certain decisions will
depend on the outcome of
previous activities
PDPC Method
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5. Methods of Collecting Verbal Data
Data Collection Method
Investigative
Techniques
Individual
Thinking
Group
Thinking
Techniques
Direct
Observation
Literature
Search
Interview Thinking
Techniques
Recall
Reflection
Thinking
Technique
Brainstorming
Group
Discussion
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