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Correlation testing in time series, spatial and cross-sectional data
[journal article]
Abstract We provide a general class of tests for correlation in time series, spatial, spatio-temporal and cross-sectional data. We motivate our focus by reviewing how computational and theoretical difficulties of point estimation mount, as one moves from regularly-spaced time series data, through forms of ir... view more
We provide a general class of tests for correlation in time series, spatial, spatio-temporal and cross-sectional data. We motivate our focus by reviewing how computational and theoretical difficulties of point estimation mount, as one moves from regularly-spaced time series data, through forms of irregular spacing, and to spatial data of various kinds. A broad class of computationally simple tests is justified. These specialize to Lagrange multiplier tests against parametric departures of various kinds. Their forms are illustrated in case of several models for describing correlation in various kinds of data. The initial focus assumes homoscedasticity, but we also robustify the tests to nonparametric heteroscedasticity.... view less
Classification
Economics
Free Keywords
correlation; heteroscedasticity; lagrange multiplier tests
Document language
English
Publication Year
2008
Page/Pages
p. 5-16
Journal
Journal of Econometrics, 147 (2008) 1
DOI
https://doi.org/10.1016/j.jeconom.2008.09.001
Status
Postprint; peer reviewed
Licence
PEER Licence Agreement (applicable only to documents from PEER project)