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In case studies of enumerated survey data from Cyprus and Egypt, it is possible to attribute interobserver variation in the detection of lithic findspots and recovery of lithics to sources of bias. The reliability of data on the presence and density of lithic scatters depends on careful evaluation, but straightforward evaluation depends on thoughtful research design. In well-designed strategies, testing for bias is straightforward but, when certain classes of data are not available, it may be impossible to determine whether variation in the apparent density of artifacts is simply a function of who collected where. We present alternatives for evaluation of survey results and presentation of survey data, including exhaustion maps and corrected density maps. |
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