kokonaisosuus

Kokonaisosuus is a Finnish statistical term meaning the share or proportion of a component relative to the whole. It expresses how much a part contributes to the total value and is commonly represented as a decimal between 0 and 1 or as a percentage between 0 and 100.

Calculation is based on the part and the total. If parts x1, x2, ..., xn sum to X, then the kokonaisosuus of part i is xi / X (or 100 × xi / X for a percentage). The sum of all kokonaisosuus values for non-overlapping parts typically equals 1 (or 100%), subject to rounding errors.

Usage spans many fields, including data analysis, economics, demography, energy statistics, market analysis, budgeting, and reporting. It underpins visual tools such as pie charts and supports comparisons of how large each component is relative to the whole.

Key properties and considerations include the requirement that the total X be nonzero; if X is zero, the kokonaisosuus is undefined. When data are scaled or units differ, the interpretation remains the same as long as the denominator matches the dataset being analyzed. Rounding can cause the sum of reported kokonaisosuus values to deviate slightly from 100%.

Relation to related terms: kokonaisosuus is closely linked to osuus (share) and proportion. It specifically references the entire dataset or population, rather than a subset, and relies on consistent denominators to enable meaningful comparisons across groups or categories.