Accuracy
Accuracy refers to how close a measurement is to the true value. It’s about being correct. In physics, accuracy refers to how close a measured value is to the true or accepted value of a physical quantity. For example, if a clock shows the time as 3:00 PM and it is 3:00 PM, the clock is accurate.
Accuracy measures how well the test or tool identifies or predicts the correct outcome. For example, if a thermometer reads 100 degrees and the actual temperature is 99.9 degrees, that thermometer is considered accurate.
Accuracy Formula
Accuracy is calculated using the following percent error formula:
Percent Error = {(Measured Value – True Value)/True Value} × 100
This formula gives us the accuracy as a percentage. The less the percent error the more accurate the value is.
Accuracy and Precision in Measurement
Accuracy means how close a measurement comes to the true value while precision refers to how consistently one can repeat a measurement. Every measurement contains some uncertainty in them. It may be due to limitations in measurement tools, observer variation, or environmental factors. This affects both the accuracy and precision of measurements. In this article, we are going to learn about accuracy and precision in detail, along with their examples and differences.
Table of Content
- Accuracy
- Precision
- Accuracy and Precision Examples
- Difference between Accuracy and Precision
- Solved Examples on Accuracy and Precision
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