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Important Tools - Coggle Diagram
Important Tools
Six Sigma
Goal
:
Improve quality and remove defects.
Reduce process variability.
Principles
:
Customer focus.
Process understanding.
Variation reduction.
Team involvement.
Systematic improvement.
Methodologies
:
DMAIC
: For existing processes.
DMADV
: For new processes.
Tools
:
Cause and Effect Diagrams
Flowcharts
Control Charts
Pareto Charts
Histograms
Definition
: Data-driven methodology to eliminate defects. Belt system from basic to expert
Fishbone Diagram / Ishikawa diagram / Cause & Effect Diagram
Purpose
: Identifies and analyzes root causes of problems.
Structure
:
Problem
at head.
Main Causes
as branches.
Sub-causes
as smaller branches.
Process
:
Define problem.
Identify main and sub-causes.
Analyze for root causes.
Benefits
:
Systematic analysis.
Team collaboration.
Root cause focus.
Use Cases
: Quality control, process improvement.
House of Quality
Definition & Purpose
: Translates customer needs into technical features, aligning product development with customer expectations.
Components
:
Customer Requirements
: Needs and desires.
Technical Descriptors
: Solutions for needs.
Relationship Matrix
: Links between needs and solutions.
Priority & Competitive Assessment
: Importance ranking and market comparison.
Process
:
Gather customer needs.
Translate to technical descriptors.
Link needs and solutions.
Rank importance and assess competition.
Benefits
:
Customer-focused development.
Technical-market alignment.
Enhanced team communication.
Competitive advantage insights.
Use Cases
: Product development, quality improvement, strategic planning.
Control Charts
Purpose
: Monitor process stability and control quality over time.
Elements
:
Center Line
: Process average.
Upper/Lower Control Limits
: Thresholds for process variability.
Data Points
: Individual measurements.
Process
:
Calculate process average.
Determine control limits.
Plot data points.
Analyze for stability.
Benefits
:
Identifies process variation.
Signals need for correction.
Supports consistent quality.
Use Cases
: Manufacturing, service quality, process management.
Pareto Chart Graphical Representation
Purpose
: Prioritize problems to focus on the most significant ones.
Elements
:
Bars
: Represent issues' frequency or impact.
Line
: Cumulative percentage of total impact.
Process
:
Identify and categorize issues.
Measure frequency/impact.
Sort issues by descending order.
Calculate cumulative impact.
Benefits
:
Highlights major problem areas.
Facilitates resource allocation.
Enhances decision-making efficiency.
Use Cases
: Quality improvement, problem-solving, resource optimization.