What is it about?
The estimation of individual values (marks) in a finite population of units (e.g., trees) scattered onto a survey region is considered under 3P sampling. For each unit, the mark is estimated by means of an inverse distance weighting interpolator. Conditions ensuring the design‐based consistency of maps are considered under 3P sampling.
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Why is it important?
Because 3P sampling involves the prediction of marks for each unit in the population, prediction errors rather than marks can be interpolated. Then, marks are estimated by the predictions plus the interpolated errors. If predictions are good, prediction errors are more smoothed than raw marks so that the procedure is likely to better meet consistency requirements.
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This page is a summary of: Design‐based mapping of tree attributes by 3P sampling, Biometrical Journal, June 2020, Wiley,
DOI: 10.1002/bimj.201900377.
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