Accuracy
(noun)
The degree of closeness between measurements of a quantity and that quantity's actual (true) value.
Examples of Accuracy in the following topics:
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Accuracy, Precision, and Error
- Accuracy is how closely the measured value is to the true value, whereas precision expresses reproducibility.
- Accuracy is how close a measurement is to the correct value for that measurement.
- This is an easy to understand introduction to accuracy and precision.
- On this bullseye, the hits are all close to the center, but none are close to each other; this is an example of accuracy without precision.
- Describe the difference between accuracy and precision, and identify sources of error in measurement
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Temperature
- This, combined with the quality and accuracy of Fahrenheit's work, led to much greater sensitivity, and his thermometer was standardized against a brine solution and universally adopted, with the Fahrenheit scale being named in his honor.
- The fundamental requirements of the practice involve accuracy, a standard, linearity, and reproducibility.
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Dating Using Radioactive Decay
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Bond Energy
- The accuracy of this method is within a few percent of the experimentally determined $\Delta H_f$ values.
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Supercritical Fluids
- For greater accuracy, the critical point can be calculated using equations of state, such as the Peng Robinson or group contribution methods.
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Acid-Base Indicators
- pH can be determined to a reasonable level of accuracy by treating a strip with the solution to be tested and then observing the color sequence on the treated area.
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Volume and Density
- If you have ever cooked in a kitchen, you have probably seen some sort of measuring cup, which allows the user to measure liquid volumes with reasonable accuracy.