Statistical Process Control for Software Inspections

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This paper provides innovative guidelines for inspections by employing statistical process control.

Summary:

This paper provides innovative guidelines for inspections by employing statistical process control (SPC).

This paper provides innovative guidelines for inspections by employing statistical process control (SPC).

The innovations include:

  • Tracking fault density = faults/(amount inspected) rather than the number of faults. Since the number of faults follows a Poisson probability law, the fault density obeys a related exponential distribution.
  • Tracking preparation and inspection efficiencies rather than rates. These are defined as (preparation time)/(amount inspected) and (inspection time)/(amount inspected). These variables fit gamma or lognormal distributions quite well.

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