Gaussian

Part of speech: adjective

Definitions

1. Pertaining to a type of statistical distribution in which data tends to form a bell-shaped curve around a central mean, it is frequently utilized in probability and statistical analyses
2. Relating to a mathematical representation of a distribution that exhibits symmetry around its mean, it plays a significant role in statistical theory and applications
3. Describing a specific probability distribution characterized by its bell-shaped graph which represents the likelihood of a variable falling within a particular range, this concept is fundamental in statistics

Etymology: Carl Friedrich Gauss, the German mathematician, has a name that gave English a whole family of statistical terms. "Gaussian" is formed from his surname plus the English suffix "-ian", which attaches to a proper name to mean "relating to" that person. The suffix itself descends from Latin "-ianus", which in turn came from "-iānus" and, further back, from Proto-Italic and Proto-Indo-European adjective-forming endings. Those older layers explain the shape of the suffix, but the word is simply a surname turned into an adjective. Gauss did not invent the bell-shaped distribution now bearing his name, and the adjective owes its wide currency to the way his work on errors and probability was taken up in the nineteenth and twentieth centuries. The term is therefore a clear case of an eponym: a name attached to a concept because a famous person's work is strongly associated with it.

Synonyms: normal distribution, bell curve