Q. Can Measures of Effectiveness (MOEs) be highly coupled in value, and how many should there be?



One of the criteria for a good MOE (not a requirement) is that the MOE is substantially independently valued as an outcome. The incidence of highly coupled MOEs is not frequent. When it does occur, it is inevitably for one of two reasons:
• the two MOEs that are coupled in value are contributors to the real MOE. An example would be Reliability and Maintainability, where the real concern is Availability, e.g. with a bank and an ATM
• there is double-counting in the MOEs, e.g. Life Cycle Cost and Development Cost.

The usual number of MOEs necessary to capture most of the tradeable value beyond requirements (at least 95% of the actual trade space, desirably closer to 98%) is few, typically from 5 to 15 or so.


"The information, tools and expertise demonstrated by Ian was invaluable"

IT Project Management Principles & Procedures Course
delegate, Australia

PPI currently presents courses on 6 continents


Featured Course

Requirements Analysis & Specification Writing
Las Vegas, NV

13 - 17 November, 2017

Requirements Analysis and Specification Writing are sciences practiced by many, mastered by surprisingly few. And yet, the payoff from achieving excellence in these areas is large. The two aspects, Requirements Analysis and Specification Writing, are treated as separate but related topics, each in a course of three and two days duration.

Brochure | Register Now

Systems Engineering NEWSLETTER

SyEN makes informative reading for the project professional, containing scores of news and other items summarizing developments in the field of systems engineering and in directly related fields.