How would you define accuracy and precision?
Answers
In this case, your measurement is not close to the known value. Precision refers to the closeness of two or more measurements to each other. Using the example above, if you weigh a given substance five times, and get 3.2 kg each time, then your measurement is very precise. Precision is independent of accuracy.
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Accuracy :
Accuracy is how close you are to the true value. For example, let’s say you know your true height is exactly 5’9″.
You measure yourself with a yardstick and get 5’0″. Your measurement is not accurate.
You measure yourself again with a laser yardstick and get 5’9″. Your measurement is accurate.
Note: The true value is sometimes called the theoretical value.
Precision :
Precision is how close two or more measurements are to each other. If you consistently measure your height as 5’0″ with a yardstick, your measurements are precise.