What's the difference between accuracy and precision?
Accuracy and precision are both ways to measure results. Accuracy measures how close results are to the true or known value. Precision, on the other hand, measures how close results are to one another. They’re both useful ways to track and report on project results. Accuracy and precision are often used interchangeably in normal life. But as terms of measurement, they’re defined differently. Just because a measurement is accurate does not mean it’s precise, and vice versa.