Back معلمة إحصائية Arabic Paràmetre estadístic Catalan Parameter (Statistik) German Parámetro estadístico Spanish پارامتر (آمار) Persian Parámetro estatístico Galician פרמטר סטטיסטי HE Statisztikai paraméter Hungarian Համախմբի պարամետր Armenian Статистички параметар Macedonian
In statistics, as opposed to its general use in mathematics, a parameter is any quantity of a statistical population that summarizes or describes an aspect of the population, such as a mean or a standard deviation. If a population exactly follows a known and defined distribution, for example the normal distribution, then a small set of parameters can be measured which provide a comprehensive description of the population, and can be considered to define a probability distribution for the purposes of extracting samples from this population.
A "parameter" is to a population as a "statistic" is to a sample; that is to say, a parameter describes the true value calculated from the full population (such as the population mean), whereas a statistic is an estimated measurement of the parameter based on a sample (such as the sample mean). Thus a "statistical parameter" can be more specifically referred to as a population parameter.[1][2]
- ^ Kotz, S.; et al., eds. (2006), "Parameter", Encyclopedia of Statistical Sciences, Wiley.
- ^ Everitt, B. S.; Skrondal, A. (2010), The Cambridge Dictionary of Statistics, Cambridge University Press.