Accuracy of an Approximation
Definition
Accuracy refers to how close an approximation is to its corresponding exact value. It indicates how well an approximation represents reality or truth.
Analogy
Think of accuracy as trying to hit a target with darts. If your dart hits very close to where you aimed (the exact value), then your approximation is highly accurate.
Related terms
Precision: Precision refers to how consistent or repeatable multiple approximations are when they are made using similar methods under similar conditions.
Relative Error: Relative error measures how large the absolute error is compared to the magnitude of the exact value, usually expressed as a percentage.
Significant Figures: Significant figures represent meaningful digits in a number and help determine how precise and accurate our results should be based on measurements and calculations.
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