Nota: A tradução desta entrada está atualmente em revisão de qualidade, portanto parte do conteúdo é exibida temporariamente apenas em inglês.
Este verbete ainda não foi traduzido para o seu idioma, portanto o original é exibido abaixo.
significant figure
This term is a technical expression used primarily in science, engineering, and mathematics to communicate the precision of a measurement. It distinguishes between digits that are known with certainty and those that are estimated, ensuring that a calculated result does not claim more accuracy than the original measurements allow.
In a practical laboratory or classroom setting, the term is used as a rule for rounding. For example, if a measurement is recorded to three significant figures, it implies the instrument used had a specific limit of resolution. Misusing this term in a non-technical context would be unusual, as it refers specifically to numerical precision rather than the "importance" of a person or event.
Meanings
Examples
The measurement is only accurate to two significant figures.
その測定値は有効数字2桁までしか正確ではありません。
掛け算をするときは有効数字の規則に従ってください。
待って、ここでの末尾のゼロは有効数字として数えるの？