Precision and accuracy are terms essential to quality control.
Let's say that you shoot three arrows at a target, hoping to hit the bullseye each time. What is learned?
- Looking at the figure to the right, you will see that you didn't hit the bullseye, nor were your arrows near each other.
- In other words, you were neither accurate (you didn't hit the bullseye) nor were you precise (the arrows were all over the target).