Fedettség

Fedettség is a Hungarian noun that denotes the degree to which something is covered or sheltered by a layer, material, or attribute. It expresses how much of a surface, volume, or dataset is not exposed or left uncovered. The term is formed from the verb stem fed- (to cover) with the abstract noun suffix -ettség, yielding a concept of coverage or completeness.

In meteorology, fedettség is used to describe cloud cover, indicating the portion of the sky obscured by clouds. It can be expressed qualitatively or as a percentage, and in some contexts may be related to traditional scales such as oktas for aviation, which measure cloudiness.

In data quality and statistics, fedettség (often phrased as adatfedettség) refers to data coverage: the extent to which data fields contain observed values. A high fedettség means few missing values and broad coverage of the variables of interest, while low fedettség indicates gaps in the data.

In information technology, telecommunications, and economics, fedettség describes the geographic or population coverage of a service or market. For example, the fedettség of a mobile network relates to what portion of a region or households have access to service, influencing planning, service quality, and market strategy.

Overall, fedettség is a flexible concept used across disciplines to discuss how completely a surface, dataset, or domain is covered, and it is commonly quantified as a percentage or proportion.