Fishbone Diagram

Data Analysis Core Competencies

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Data Analysis Techniques Descriptive Statistics Inf erential Statistics Graphing Data Aff inity Diagram Delphi Technique

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EMRA, 1998

Fishbone (Cause-and-Effect)Diagram

Force Field Analysis Pareto Diagram

PART 4 : Data Analys is Core Com petenc ies

Section 21:

Overview

Introduction

Fis hbone (Cause-a nd-Effect) Diagram

CONTENTS

PAGE

Steps a nd Proce dures

1 Assemble a Team to Carry Out the Diagramming Process

PAGE

3

Figure 1: Basic Structure of a Fishbone Diagram Figure 2: Categorical Patterns for a T ypical Production Process

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Purposes of Fishbone Diagram Advantages and Limitations of Fishbone Diagram

Figure 3: Advantages and Limitations of Fishbone Diagram

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2

Identify and Clearly State the Need

Figure 4: Affinity Diagram Example

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5

3

Draw the Structure of a Fishbone Diagram

Figure 5: Fishbone Diagram Example (Phases 1 and 2)

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4

Identify Major Cause Categories and Connect Them to the Backbone of the Fish

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5

Brainstorm Causes for Each of the Major Categories

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6

Place Each Brainstormed Cause in Its Appropriate Category

Figure 6: Fishbone Diagram Example (Phase 3)

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7

Identify Potential Root Causes

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8

General Discussion of the Fishbone Diagram

Figure 7: Fishbone Diagram Completed Example (Phase 4)

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9

Logistical and Follow-Up Activities

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Legend:

Refer enc es to parts of the han dbook an d othe r ide as. Num ber ed steps a nd Proce dur es

Refer enc e not es and s up ple ment al inform atio n on opp osite pa ge.

Important points, hints and ideas.

☺

Key Poi nts an d Ideas

Adva ntag es

1

Limit atio ns

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PART 4: Data Analysis Core Competencies

FISHBONE (CAUSE-AND- EFFECT) DIAGRAM

NOTES AND SUPPLEMENTAL INFORMATION

OVERVIEW

Figure 21.1: Basic Structure of a Fishbone Diagram

Cause (factors)

Effect

Figure 21.2: Categorical...