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| Autocorrelació espacial global× | Índex I de Moran× | |
|---|---|---|
| Camp | Anàlisi espacial | Anàlisi espacial |
| Família | Regression model | Regression model |
| Any d'origen | 1950 | 1950 |
| Autor original≠ | P. A. P. Moran (Moran's I, 1950); generalized by Luc Anselin | Patrick A. P. Moran |
| Tipus≠ | Spatial statistic / hypothesis test | Spatial autocorrelation statistic |
| Font seminal | Moran, P. A. P. (1950). Notes on continuous stochastic phenomena. Biometrika, 37(1/2), 17–23. DOI ↗ | Moran, P. A. P. (1950). Notes on continuous stochastic phenomena. Biometrika, 37(1/2), 17–23. DOI ↗ |
| Àlies | global spatial dependence, global Moran's I, GSA, global spatial clustering measure | Moran's I statistic, global Moran's I, spatial autocorrelation index, Moran index |
| Relacionats | 6 | 6 |
| Resum≠ | Global Spatial Autocorrelation measures the degree to which similar values cluster together across an entire study area. Rather than identifying where clusters occur, it yields a single summary statistic — most commonly Moran's I — that quantifies whether spatial proximity coincides with value similarity, dissimilarity, or randomness across all observations simultaneously. | Moran's I is the standard global statistic for detecting spatial autocorrelation: whether nearby locations tend to share similar values. The index ranges from approximately −1 (perfect dispersion) through 0 (spatial randomness) to +1 (perfect clustering), allowing researchers to test whether a geographic pattern differs from complete spatial randomness with a single, interpretable number. |
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