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	Robust Geary's C	Robust Morans I
Ämnesområde	Rumslig analys	Rumslig analys
Familj	Regression model	Regression model
Ursprungsår	1954 (base); robust variants: 1990s–2000s	1990s–2000s
Upphovsperson	Geary (1954); robust extensions by Anselin and spatial statisticians	Extension of Moran (1950); robust adaptations developed in spatial statistics literature
Typ	Robust spatial autocorrelation statistic	Robust spatial autocorrelation statistic
Ursprungskälla	Geary, R. C. (1954). The contiguity ratio and statistical mapping. The Incorporated Statistician, 5(3), 115–145.	Anselin, L. (1995). Local indicators of spatial association—LISA. Geographical Analysis, 27(2), 93–115.
Alias	robust Geary contiguity ratio, outlier-resistant Geary's C, robust spatial contiguity statistic, robust Geary C	outlier-resistant Moran's I, robust spatial autocorrelation test, median-based Moran statistic, robust global spatial association
Närliggande	6	6
Sammanfattning	Robust Geary's C adapts the classical Geary contiguity ratio — a measure of spatial autocorrelation based on pairwise squared differences between neighbouring locations — to resist distortion by spatial outliers and influential observations. It retains the local sensitivity of Geary's C while producing more reliable inferences when the spatial data contain extreme values or non-normal distributions.	Robust Moran's I is an outlier-resistant adaptation of the classic Moran's I spatial autocorrelation statistic. By replacing the standard mean-based standardization with resistant measures of center and spread, it detects genuine geographic clustering without being distorted by a small number of extreme values in the attribute of interest.