What is the difference between accuracy and precision

Question

Accepted Answer

Accuracy refers to how close a measured value is to the true value, while precision refers to how close multiple measurements are to each other.

Accuracy is the degree of closeness between a measured value and the true value.
Precision is the degree of closeness between multiple measurements of the same quantity.
Accuracy is related to systematic errors, while precision is related to random errors.
Accuracy can be affected by bias, while precision can be affected by variability.
An example: If a target is hit close to the bullseye every time, it is both accurate and precise. If the shots are grouped tightly but away from the bullseye, it is precise but not accurate. If the shots are scattered all over the target, it is neither accurate nor precise.

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