Accuracy and Precision

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What is the definition of Accuracy?

Back

Accuracy refers to how close a measurement is to the true or accepted value.

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What is the definition of Precision?

Back

Precision refers to how close multiple measurements are to each other, regardless of whether they are close to the true value.

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What does High Accuracy & High Precision mean?

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It means that the measurements are both close to the true value and close to each other.

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What does Low Accuracy & High Precision mean?

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It means that the measurements are close to each other but not close to the true value.

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What does High Accuracy & Low Precision mean?

Back

It means that the measurements are close to the true value but not close to each other.

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What does Low Accuracy & Low Precision mean?

Back

It means that the measurements are neither close to the true value nor close to each other.

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How can you improve accuracy in measurements?

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You can improve accuracy by using calibrated instruments and following proper measurement techniques.

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How can you improve precision in measurements?

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You can improve precision by taking multiple measurements and using the average value.

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What is an example of a situation with High Accuracy & High Precision?

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A set of measurements that are all 10.0 cm when the true value is also 10.0 cm.

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What is an example of a situation with Low Accuracy & High Precision?

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A set of measurements that are all 9.0 cm when the true value is 10.0 cm.