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Statistical Sampling for Process Assessments

journal contribution
posted on 01.01.2009, 00:00 by David M. Northcutt, Mark C. Paulk
Many framework-based process improvement programs, such as those based on the eSourcing Capability Model for Service Providers (eSCM-SP) and Capability Maturity Model Integration for Development (CMMIDEV), rely on a sample of engagements (or projects) in drawing conclusions about organizational capability. The intent is to determine the normal behavior in the organization based on a “representative” sample, but a rigorous definition of what characterizes a representative sample is usually not provided. The purpose of this article is to define in statistical terms, with explicitly stated assumptions, what a reasonable representative sample should be so a reliable characterization of organizational capability can be established. The analysis is illustrated in the context of the eSCM-SP but can be extended to other frameworks.

History

Date

01/01/2009