fejlfordelt

Fejlfordelt is a Danish term used in statistics, metrology and related fields to describe how errors are distributed across observations or measurements. The form consists of fejl (error) and fordelt (distributed); the noun form is fejlfordeling, and fejlfordelt can be used as an adjective meaning "error-distributed" or "associated with an error distribution."

In practice, fejlfordelt refers to the distribution of measurement errors or residuals around a predicted value. A central assumption in many models is that errors are random and follow a specified probability distribution; the normal distribution is a common choice, giving a normal fejlfordeling. Other distributions, such as uniform or triangular, yield different forms of fejlfordeling.

Assessing the fejlfordeling of a dataset is part of evaluating model quality and measurement uncertainty. Analysts use histograms, Q-Q plots and normality tests to judge whether the observed errors conform to the assumed distribution. Deviations can indicate systematic bias, heteroscedasticity or non-normal error structure and may lead to adjusted uncertainty estimates or alternative modeling approaches.

Related terms include fejlfordeling (error distribution) and usikkerhed (uncertainty). In Danish technical writing, precise description of the fejlfordeling helps communicate the reliability of measurements and predictions.