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IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 1/22 Many IT projects continue.

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Presentation on theme: "IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 1/22 Many IT projects continue."— Presentation transcript:

1 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 1/22 Many IT projects continue to suffer from poor estimation. The accuracy of estimation has hardly changed from that reported in a seminal study carried out over 20 years ago. Based on findings from two recent survey-based studies, which replicated and then extended the original study, guidelines for improving IT project estimation are provided.

2 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 2/22 Agenda  Many IT Projects Still Suffer From Poor Estimation  Why Estimates Matter  Research Study 1  Research Study 2  Guidelines for Improving IT Project Estimation

3 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 3/22 Many IT Projects Still Suffer From Poor Estimation  “Unrealistic expectations based on inaccurate estimates are the single largest cause of [IT project] failure”  Most project managers do a very poor job of estimating and, as a result, most IT projects are classified as failures—61%.  74% of challenged projects experience time overruns and 59% experience cost overruns.  Further evidence can be found in a review of 180 IT projects completed between 1999-2013, 5 64% of which suffered from poor estimation.

4 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 4/22 Agenda  Many IT Projects Still Suffer From Poor Estimation  Why Estimates Matter  Research Study 1  Research Study 2  Guidelines for Improving IT Project Estimation

5 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 5/22 Why Estimates Matter  Accurate estimation is very important to IT project managers for a wide variety of reasons:  Avoiding the vicious cycle  Avoiding the ripple effect  Avoiding late-in-the-project discovery  Facilitating better budgeting  Evaluating project personnel  Generating more credibility for the project team

6 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 6/22 Agenda  Many IT Projects Still Suffer From Poor Estimation  Why Estimates Matter  Research Study 1  Research Study 2  Guidelines for Improving IT Project Estimation

7 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 7/22 Organization-Level Analysis of Project Estimation  Lederer and Prasad (1992( published the results of a survey of 115 IT professionals on their organizations’ cost estimation practices, which is used as a baseline for this research.  The primary objective of the first study was to discover how project estimation perceptions and practices have changed over the more than 20 years since Lederer and Prasad’s original study.

8 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 8/22 Estimates use and practice

9 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 9/22 Bases of the Estimating Process

10 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 10/22 Causes of Inaccurate Estimates

11 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 11/22 Agenda  Many IT Projects Still Suffer From Poor Estimation  Why Estimates Matter  Research Study 1  Research Study 2  Guidelines for Improving IT Project Estimation

12 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 12/22 Project-Level Analysis of Project Estimation  Study 1 enabled us to gain an overall view of organizational project estimation practices. We wanted to supplement these findings with a more detailed study of projects focused on project-level data. In Study 2, we therefore surveyed 115 IT professionals and asked them to respond with data about their most recently completed IT projects.  Another factor we wanted to explore is the changes in the IT development landscape since, with special interest on Agile Development.

13 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 13/22 Cost & Schedule Performance

14 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 14/22 Estimation Best Practices In Use

15 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 15/22 Method for Estimating Project Cost

16 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 16/22 Methods Used to Estimate Size and Complexity of IT Projects

17 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 17/22 Responsibility for Estimate Creation

18 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 18/22 Estimate Timing and Presentation

19 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 19/22 Project Success Criteria

20 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 20/22 Project Success Criteria

21 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 21/22 Agenda  Many IT Projects Still Suffer From Poor Estimation  Why Estimates Matter  Research Study 1  Research Study 2  Guidelines for Improving IT Project Estimation

22 IT Project Estimation: Contemporary Practices and Management Guidelines R. Ryan Nelson & Michael G. Morris - March 2014 Page 22/22 Guidelines for Improving IT Project Estimation  Admit You Have a Problem  Revisit the Prescriptions Offered by Lederer and Prasad  Conduct Project Retrospectives  Employ Estimation Tools  Understand Agile Approaches and Adapt Estimation Techniques Accordingly  Avoid Cognitive Biases Toward Estimation  Understand the Estimate- Convergence Graph  Understand the Difference Between a Target and an Estimate  Manage Stakeholders  Develop Estimation Competencies of Project Managers and Team Members


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