27 September 2021

Instability Index

Instability Index definition

  • It is a code quality metric.
  • The instability index measures efferent coupling in relation to total coupling.

Instability Index practice

  • The instability index measures efferent coupling in relation to total coupling :
    • Instability Index = Ce / (Ca + Ce) Ce :
    • This metric has a range [0,1]
    • A value of 1 means a code component is highly unstable, and a value of 0 means it is highly stable.

Scrum and Metrics

The Scrum framework

More informations for the Scrum PSD certification here.

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