My new paper with Henry Wen, “Lost in Aggregation: Quantifying Measurement Error from Geographic Centroids,” has been published open access in Economic Record. The question behind it had stayed with me since my PhD. In work with Alicia Rambaldi and James Hansen, we constructed spatial variables such as distances to amenities from SA1 centroids because exact locations are often unavailable in linked Australian microdata. Henry and I connected somehow. He found the question interesting, and we started working on it together: how much error do these centroid-based variables actually introduce?
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