Statistical Models for Spatial Data: Some Linkages and Communalities
Abstract
Introductory mathematical statistics textbooks discuss topics such as the sample variance by invoking the assumption of independent and identically distributed (iid). In other words, in terms of second moments, of the n 2 possible covariations for a set of n observations, the independence assumption posits that n(n – 1) of these covariations have an expected value of 0, leaving only the n individual observation variance terms for analysis. This independence assumption is for convenience, historically making mathematical statistical theory tractable. But it is an arcane specification that fails to provide an acceptable approximation to reality in many contexts.
Keywords
Spatial Autocorrelation Geostatistical Model Semivariogram Model Positive Spatial Autocorrelation Georeferenced DataNotes
Acknowledgment
Contributions made to the development of this chapter by Dr. Larry Layne, University of New Mexico, are greatly appreciated.
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