Student A pipettes 10 ml of water three times and gets the values, 10.11 ml, 10.04 ml and 9.97 ml. Student B repeats the experiment using the same pipette and delivers volumes of 9.45, 10.11 ml and 9.50 ml. If the actual volume delivered by the pipette is 10.00 ml, which student is the most accurate? Which student is most precise?

Student A is accurate and Student B is precise.

Explanation:

Accuracy is nothing but how close a measured value is to its standard value. Precision means how closer two or more than two measurements are to one another, despite whether those values are accurate or not.

In Student A's measurement, 10.11 ml, 10.04 ml and 9.97 ml are closer to the standard value, so they are accurate.

Student B's value 9.45 and 9.5 are closer to one another, so it is precise.

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