A balance was tested against a standard calibration mass with a certified value of 200.002 g and produced the following readings in grams: 195.587, 195.586, 195.588, 195.587, 195.589. The performance of this balance is best described as:

Precise but not accurate.

Explanation:

We can tell the performance of the balance is precise, because the repeated measurements give values close to one another.

However, the performance of the balance is not accurate, as the mean value of the repeated measurements (195.587) is not close to the value considered as true (in this case the standard calibration mass with a certified value of 200.002 g).

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