Accuracy is defined as the closeness of a measured value to a known or true value, reflecting how correct a measurement is. Precision is defined as the closeness or consistency of multiple measurements to each other, regardless of their closeness to the true value. In other words, accuracy indicates correctness, while precision indicates repeatability or reliability of measurements. For example, precise measurements may be consistently close to each other but not necessarily close to the true value, whereas accurate measurements are close to the true value but may not be consistent with each other.
