ISO/IEC 25022: Systems and software engineering — Measurement of quality in use
This standard is part of the ISO/IEC 25000 (SQuaRE) series. It defines measures for the characteristics of the “quality in use” model defined in ISO/IEC 25010.
Key ideas
- Focus on “Quality in Use”: The standard provides a framework for measuring the quality of a system from the user’s perspective.
- Metrics for Quality Characteristics: It defines a set of measures for the five characteristics of quality in use: effectiveness, efficiency, satisfaction, freedom from risk, and context coverage.
- Context is Key: The standard emphasizes that the measurement of quality in use must be done in a specific context of use.
- Guidance for Measurement: It provides guidance on how to apply the measures and how to interpret the results.
Quality Attributes (Quality in Use Characteristics)
The standard defines measures for the following quality in use characteristics:
| Attribute | Relevance in ISO/IEC 25022 |
|---|---|
| Effectiveness | The accuracy and completeness with which users achieve specified goals. |
| Efficiency | The resources expended in relation to the accuracy and completeness with which users achieve goals. |
| Satisfaction | The degree to which user needs are satisfied when a product or system is used in a specified context of use. |
| Freedom from risk | The degree to which a product or system mitigates the potential for economic risk, health and safety risk, and environmental risk. |
| Context Coverage | The degree to which a product or system can be used with effectiveness, efficiency, freedom from risk and satisfaction in all the specified contexts of use. |