Test and measurement refer to the processes used to evaluate and quantify the characteristics of various objects, systems, or phenomena. This field encompasses a wide range of activities, including the design of tests, the collection of data, and the analysis of results. It is essential in industries such as engineering, healthcare, and education to ensure quality and performance. In practice, test and measurement involve using specific tools and techniques to gather information. For example, calibrated instruments like multimeters or oscilloscopes are often employed to measure electrical properties. The data obtained helps in making informed decisions, improving products, and ensuring compliance with standards.