precisione

Precisione is the quality of being precise, referring to the degree to which a measurement, estimate, or description is exact and reproducible. In everyday use it denotes exactness and detail; in technical contexts it also implies consistency of results across repeated measurements or calculations.

In metrology, precision is distinguished from accuracy. Accuracy describes closeness to the true value, while precision describes the spread or reproducibility of results. A set of measurements can be precise but not accurate if they yield similar results that are far from the true value. Terms like repeatabilità and riproducibilità express different aspects of precision: repeatability refers to agreement among measurements under identical conditions; reproducibilità refers to agreement across different conditions or observers. Statistical measures such as standard deviation or the coefficient of variation quantify precision.

In computing and data science, precision often refers to the number of significant digits in a numeric value or the resolution of a data type (for example, floating-point precision). Insufficient precision can lead to rounding errors, numerical instability, or loss of detail in calculations.

In language and communication, precision means choosing words that convey exact meaning and avoiding ambiguity. In engineering and manufacturing, specifications and tolerances are expressed with precision to ensure compatibility, quality, and repeatable results. Across disciplines, precision complements but does not guarantee accuracy, underscoring the importance of clearly defined measurement objectives and appropriate methods.