Define the terms accuracy and precision. Give examples which illustrate the difference between terms.

3.6 Ratings (334 Votes)

* Precision refers to the closeness of various measurements for the same quantity.

* Accuracy is the agreement of a particular value to the true value of the result.

EX: For a true value of 2.00 g.

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 1Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 2Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â average

Student AÂ Â Â Â Â Â 1.95Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 1.93Â Â Â Â Â Â Â Â 1.94

Student BÂ Â Â Â Â Â 1.94Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 2.05Â Â Â Â Â Â Â Â Â Â 1.995

Student CÂ Â Â Â Â Â Â 2.01Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 1.99Â Â Â Â Â Â Â Â Â Â Â 2.00

Student A: Measured values are precise but not acuurate

StudentB : Not precise and not accurate

Student: Precise and acuurate

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