Video - Test precision and accuracy
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Video Summary
In testing and measurement, accuracy and precision are two important concepts of the quality of the test results. Accuracy refers to how close the measured value is to the true value. In other words, it reflects the degree to which a test result is correct or exact. A test can be accurate if it uses a tool with high validity.
Precision, on the other hand, refers to the consistency or reproducibility of the results obtained from a test. It reflects the degree of variation or uncertainty in the results. A precise test uses tools with high reliability.
So, a tool with high validity will get results that are close to the true value, and a tool with high reliability will get results that are consistent no matter how many times the measurement is repeated.
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