What are metrics NOT used for?

To apply to the RAD development model. Metrics are quantitative measures that can be used to monitor, control, and improve the test process and the quality of the system. Metrics can be used for various purposes, such as to identify the percentage of work done in test environment preparation or test case preparation, to measure whether dates of test milestones were met, to compare actual results with expected results, to evaluate the effectiveness and efficiency of testing, etc. However, metrics are not specific to any development model, such as RAD (Rapid Application Development), and can be applied to any type of software development project. A detailed explanation of metrics can be found in [A Study Guide to the ISTQB® Foundation Level 2018 Syllabus], pages 103-105.