Accuracy refers to how close an approximation is to its corresponding exact value. It indicates how well an approximation represents reality or truth.
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.