Select subprocesses of the project’s defined process to be statistically managed.
Selecting subprocesses to be statistically managed is often a concurrent and iterative process of identifying applicable project and organization quality and process-performance objectives,
selecting subprocesses, and identifying process and product attributes to measure and control. Often the selection of a process, quality and process-performance objective, or measurable attribute will constrain the selection of the other two. For
example, if a particular process is selected, measurable attributes and quality and process-performance objectives may be constrained by that process.
Typical Work Products
1. Quality and process-performance objectives to be addressed by statistical management
2. Criteria used in selecting which subprocesses will be statistically managed
3. Subprocesses to be statistically managed
4. Identified process and product attributes of selected subprocesses that should be measured and controlled
Subpractices
1. Identify which of the project’s quality and process-performance objectives will be statistically managed.
2. Identify criteria to be used in selecting subprocesses that are the main contributors to achieving identified quality and
process-performance objectives and for which predictable performance is important.
Examples of sources for criteria used in selecting subprocesses include the following:
· Customer requirements related to quality and process performance
· Quality and process-performance objectives established by the customer
· Quality and process-performance objectives established by the organization
· The organization’s performance baselines and models
· Stable performance of the subprocess on other projects
· Laws and regulations
3. Select subprocesses to be statistically managed using selection criteria.
It may not be possible to statistically manage some subprocesses (e.g., where new subprocesses and technologies are being piloted). In other cases, it may not be economically justifiable to
apply statistical techniques to certain subprocesses.
4. Identify product and process attributes of selected subprocesses to be measured and controlled.
Examples of product and process attributes include the following:
· Defect density
· Cycle time
· Test coverage