PHY C1: Accuracy and Precision

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6 Terms

1
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What is Accuracy?

The degree of closeness of the mean value of the measurements to the true value.

2
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What type of error affects Accuracy?

Systematic error.

3
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What is Precision?

The degree of agreement between repeated measurements of the same quantity.

4
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What type of error affects Precision?

Random error.

5
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How do "Accuracy" and "Precision" compare?

They are comparative terms; require comparing at least two sets of measurements.

6
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How are Accuracy and Precision graphically illustrated?

On a distribution graph, accurate results cluster near the true value; precise results cluster closely together (bell-shaped graph).