rojse
RF Addict
Precision and accuracy are two different terms used in measurement.
Accuracy is how close a set of results comes to the real measurement.
Precision is how close the set of results are to eachother.
I would analagise this two throwing a set of darts. Let's say I have two darts. I throw a dart one hundred metres left of a target, and the other dart one hundred metres right. The average of the two darts is right on the target, but the darts are two hundred metres apart. My throws, as an average, were accurate, but imprecise.
If I throw two darts one hundred metres left of the target, and they are both within a centimetre of eachother, the throws, on average, were inaccurate, missing the target by one hundred metres, on average, but precise, because they were close together.
Accuracy is how close a set of results comes to the real measurement.
Precision is how close the set of results are to eachother.
I would analagise this two throwing a set of darts. Let's say I have two darts. I throw a dart one hundred metres left of a target, and the other dart one hundred metres right. The average of the two darts is right on the target, but the darts are two hundred metres apart. My throws, as an average, were accurate, but imprecise.
If I throw two darts one hundred metres left of the target, and they are both within a centimetre of eachother, the throws, on average, were inaccurate, missing the target by one hundred metres, on average, but precise, because they were close together.