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Activity Number: 137
Type: Contributed
Date/Time: Monday, August 4, 2008 : 10:30 AM to 12:20 PM
Sponsor: Section on Statistics and the Environment
Abstract - #300707
Title: On the Codispersion Coefficient for Spatial Sequences
Author(s): Ronny O. Vallejos*+
Companies: Universidad de Valparaíso
Address: Avenida Gran Bretaña 1091, Valparaiso, International, V, Chile
Keywords: Codispersion coefficient ; Spatial autoregressive models ; correlation coefficient
Abstract:

In this talk some properties of the sample codispersion coefficient for spatial and temporal sequences are discussed. The consistency and asymptotic normality are established for any error distribution admitting finite fourth moment. The performance of the codispersion coefficient is examined by Monte Carlo simulation. Approximate confidence intervals and a test of independence are addressed. To illustrate the applicability of the coefficient, a real data example is presented in the context of flammability properties of polymers.

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