This unit of competency covers the skills and knowledge required to quantitatively analyse past changes made in an organisation’s operations, systems, process or environment to ensure the quantum of expected change has been achieved and that gains are maintained and are used as a basis for further gains. The unit includes statistical and other mathematical analysis of data, methods for capturing data on implemented changes (quantitative and qualitative) and producing useful information from this data. It includes consultation with stakeholders both for data validation and consensus decision making for future improvements. This unit applies to team leaders, technical experts and people with a similar sphere of influence/scope of authority and responsibility who already have a knowledge of statistics used in managing operations and of process capability improvement and some knowledge of factorial design, the selection and analysis of appropriate metrics, and the discrimination between valid and invalid interpretations of data The unit applies to reviews of both intended and unintended consequences of change and the effectiveness of the implementation of the change. This unit is not intended to be applied to a technical or engineering review of a major capital expenditure or similar. This unit takes a largely quantitative approach to the review. This unit may also be applied to service organisations applying competitive systems and practices principles.No licensing, legislative or certification requirements apply to this unit at the time of publication.