What is the function of 'test metrics'?

'Test metrics' serve the crucial role of offering measurable indicators that assess the progress and effectiveness of the testing process. By quantifying various aspects such as test coverage, defect density, and testing efficiency, test metrics enable teams to analyze their testing efforts critically. This information is invaluable in determining the quality of the software, identifying areas for improvement, and making informed decisions regarding release readiness.

In contrast, while creating user stories is essential for understanding requirements, automating testing procedures enhances efficiency, and compiling defect lists helps track issues, these functions do not encapsulate the primary purpose of test metrics, which is centered around measurement and evaluation of the testing process specifically.