| Accuracy | Precision |
| Accuracy is a measure of how close a measurement is to its true value. | Precision is a measure of how close two or more measurements are to each other. |
| Accuracy is the closeness to the true or accepted value. | Precision is the closeness of two or more measurements to each other. |
| Accuracy is a property of the result. | Precision is a property of the process. |
| Accuracy can be improved by taking more measurements. | Precision can be improved by using better instruments and techniques. |
| Accuracy is affected by random errors. | Precision is affected by systematic errors. |