Accuracy

Examples of Accuracy in the following topics:

• 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

• 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.

• Dating Using Radioactive Decay

• Bond Energy

  • The accuracy of this method is within a few percent of the experimentally determined $\Delta H_f$ values.

• Supercritical Fluids

  • For greater accuracy, the critical point can be calculated using equations of state, such as the Peng Robinson or group contribution methods.

• 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.

• 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.