chapter 10 it project quality management copyright 2012 john wiley & sons, inc. 10-1
TRANSCRIPT
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Chapter 10
IT Project Quality Management
Copyright 2012 John Wiley & Sons, Inc.10-1
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The Importance of Project Quality Management
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Scope
Time Cost
Quality
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The Importance of Project Quality Management
People seem to accept systems being down occasionally or needing to reboot their PCs
But quality is very important in many IT projects
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What Is Project Quality?
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The Cost of Quality
The cost of quality is the cost of conformance plus the cost of nonconformance
Cost Categories Related to Quality
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Project Quality Management
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• Software bugs account for about 40% computer systems failure
• Software horror stories www.risks.org http://www.cs.tau.ac.il/~nachumd/horror.html
• In 2008, software glitch was the reason for London Stock Exchange (LSE) failure
• In 2003, software failure caused blackout in the Northeast corridor of the U.S. and parts of Canada
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Costs/Hour of Downtime Due to Software Defects
Business Cost per Hour Downtime
Automated teller machines (medium-sized bank) $14,500
Package shipping service $28,250
Telephone ticket sales $69,000
Catalog sales center $90,000
Airline reservation center (small airline) $89,500
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Major software defects
http://listverse.com/2012/12/24/10-seriously-epic-computer-software-bugs/
What will top 2014?
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What Is Project Quality Management?
Project quality management ensures that the project will satisfy the needs for which it was undertaken
Processes include:
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Project Quality Management Summary
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1) Planning Quality
Implies the ability to anticipate situations and prepare actions to bring about the desired outcome
Important to prevent defects by:
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Quality and IT Projects
Customers have difficulty explaining exactly what they want in an IT project.
What are the important scope aspects of IT projects that impact quality?
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Who’s Responsible for the Quality of Projects?
Several organizations and references:
International Organization for Standardization (www.iso.org)
IEEE (www.ieee.org)
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2) Performing Quality Assurance
Performing Quality Assurance through:
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Testing
Many IT professionals think of testing as a stage that comes near the end of IT product development
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Types of Tests
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Testing Alone Is Not Enough
Watts S. Humphrey, a renowned expert on software quality, defines a software defect as anything that must be changed before delivery of the program
Testing does not sufficiently prevent software defects because
Why?
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3) Controlling Quality
The main outputs of quality control are: Acceptance decisions Rework Process adjustments
Seven Basic Tools of Quality Flowchart Run Chart Scatter Diagram Histogram
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Pareto Diagram Control Chart Cause and Effect Diagram
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Flowcharts
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Run Charts
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Scatter diagram
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Histograms
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Pareto Charts
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Quality Control Charts
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The Seven Run Rule
You can use quality control charts and the seven run rule to look for patterns in data
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Checksheet
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Cause-and-Effect Diagrams
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