Tarkkuudeltaan

Tarkkuudeltaan is a Finnish adverbial noun form used to express the precision or accuracy of a measurement, estimate, or assertion. It is formed from tarkkuus (accuracy, precision) with the suffix -deltaan, producing a phrase that means “in terms of accuracy” or “by precision.” The construction is common in technical, scientific, and statistical writing.

Usage in Finnish is to qualify a preceding measurement or claim with its level of precision. It typically follows the thing being described, and introduces a numerical value or range that indicates reliability or exactness. Examples:

- Mittauksen pituus on 1,23 m, tarkkuudeltaan ±0,01 m. (The measurement length is 1.23 m, with precision ±0.01 m.)

- Ennuste on tarkkuudeltaan noin ±3 %. (The forecast has an accuracy of about ±3%.)

- Tiedon tarkkuudeltaan 99,9 prosenttia. (The data have an accuracy of 99.9 percent.)

Style and register: tarkkuudeltaan is a formal, often technical, construction. In everyday language, speakers may use simpler expressions such as tarkka, tarkkuus, or arviolta to convey similar ideas.

Relation to related terms: tarkkuus refers to the general notion of accuracy or precision, while the suffixes used in -deltaan forms (such as pituudeltaan, korkeudeltaan, painoltaan) describe a dimension or attribute from the point of view of measurement. The form helps convey exactness and reliability in reporting and analysis.