Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Assessing the effect of clustered and biased multi-stage sampling
AU - Menezes, Raquel
AU - Tawn, Jonathan
PY - 2009/6/30
Y1 - 2009/6/30
N2 - We propose a method for detecting biased multi-stage sampling of spatial data and a method to adjust for biased clustering of samples. We assess the effect of these methods for the analysis of radioactivity contamination data from Rongelap island, with the scientific problem being the estimation of the maximum level of radioactivity over the island. These data were collected over a two-stage process of uniform and clustered samples, which may have an impact on conclusions from a standard analysis that does not account for either of these features.
AB - We propose a method for detecting biased multi-stage sampling of spatial data and a method to adjust for biased clustering of samples. We assess the effect of these methods for the analysis of radioactivity contamination data from Rongelap island, with the scientific problem being the estimation of the maximum level of radioactivity over the island. These data were collected over a two-stage process of uniform and clustered samples, which may have an impact on conclusions from a standard analysis that does not account for either of these features.
KW - Biased sampling
KW - Clustered data
KW - Multi-stage sampling
KW - Radioactivity data
KW - Variogram estimation
U2 - 10.1002/env.942
DO - 10.1002/env.942
M3 - Journal article
AN - SCOPUS:67650118806
VL - 20
SP - 445
EP - 459
JO - Environmetrics
JF - Environmetrics
SN - 1180-4009
IS - 4
ER -