Derived measures are defined to be a function of two or more base measures.
An example of a derived measure is productivity. Productivity is a function of the
size of a produced work product divided by the time to produce it (for example,
design document productivity in pages per hour is the number of pages in the
document divided by the hours to produce the document).
The high-maturity measurement concepts that we are going to cover are Process
Performance Baselines, Process Performance Models, and Event Level Measurement.
Event level measures are used to build Process Performance Baselines. Process
Performance Baselines are used to build Process Performance Models. The Process
Performance Baselines and Process Performance Models rely on the predictable and
stable processes that we described in our Chapter 18 on statistical process control.
258 n Interpreting the CMMI
e ent le el Measurement
One of the things that people overlook with high-maturity measurement is the level
of detail that you want in your measures. Relating measures to events gives you this
detail.
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