Back نزعة مركزية Arabic Tendència central Catalan پێوەرەکانی ڕووکردنە چەق CKB Canolduedd Welsh Lagemaß (Stochastik) German Medidas de tendencia central Spanish Zentro-joera (estatistika) Basque شاخصهای مرکزی Persian Keskiluku Finnish Indicateur de tendance centrale French
In statistics, a central tendency (or measure of central tendency) is a central or typical value for a probability distribution.[1]
Colloquially, measures of central tendency are often called averages. The term central tendency dates from the late 1920s.[2]
The most common measures of central tendency are the arithmetic mean, the median, and the mode. A middle tendency can be calculated for either a finite set of values or for a theoretical distribution, such as the normal distribution. Occasionally authors use central tendency to denote "the tendency of quantitative data to cluster around some central value."[2][3]
The central tendency of a distribution is typically contrasted with its dispersion or variability; dispersion and central tendency are the often characterized properties of distributions. Analysis may judge whether data has a strong or a weak central tendency based on its dispersion.
- ^ Weisberg H.F (1992) Central Tendency and Variability, Sage University Paper Series on Quantitative Applications in the Social Sciences, ISBN 0-8039-4007-6 p.2
- ^ a b Upton, G.; Cook, I. (2008) Oxford Dictionary of Statistics, OUP ISBN 978-0-19-954145-4 (entry for "central tendency")
- ^ Dodge, Y. (2003) The Oxford Dictionary of Statistical Terms, OUP for International Statistical Institute. ISBN 0-19-920613-9 (entry for "central tendency")