Standard CMMI Appraisal Method for Process Improvement (SCAMPI)

1.1.3 Determine Appraisal Scope (continued)
Parameters
and Limits
Optional
Practices
The reference model scope includes the PAs and associated maximum
capability level and/or maturity level that will be investigated by the appraisal
team (i.e., the generic goals that will be rated for each PA within the scope of
the appraisal). Note that the selection of the reference model representation
should have been discussed during the setting of appraisal objectives, because
the representation selected may impact the achievability of these objectives.
The model scope of the appraisal must encompass at least one PA. All generic
goals and specific goals up to and including the target capability level and/or
maturity level for each selected PA must be rated; individual goals within a
PA cannot be excluded.
Instantiations must be selected that are representative of the implemented
processes and functional areas being investigated within the organizational
unit, and that operate within a coherent process context (see glossary for
definition). This is also sometimes known as the organizational scope of the
appraisal. The rationale for selecting these elements as representative of the
organizational unit should be documented.
Typically, the organizational unit will be specified in such a manner that (a) at
least two instances of the processes being investigated are available as sources
of objective evidence and (b) a representative coverage of the life cycles in
use within the organization is obtained. Selection of instantiations within the
organizational unit may be accomplished through a survey form, or through
summarizing information learned from discussions with members of the
organization. For processes enacted at the organization level (such as
Organizational Training), multiple instances are not required.
The representative instantiations to be investigated during the appraisal will
also drive the selection of participants needed to provide sources of objective
evidence. An initial determination of appraisal participants, by name and role,
should be negotiated with the appraisal sponsor and/or the senior site manager
as part of the early determination of organizational scope. This will be refined
later during detailed appraisal planning.
Use broad-based survey instruments or a Practice Implementation Indicator
(PII) database to characterize the population of projects or divisions in an
organization before determining the organizational scope of the appraisal.
Continued on next page
CMU/SEI-2001-HB-001
Page II-11