On the possibility that these might have cultural significance, the levels were separated into two seriations based on the difference in relative frequency.
The avoidance of previously occupied locations by subsequent occupants of the region detected by the seriations is explained by the ethnographic evidence that prehistoric sites are neither cultivated nor reoccupied by traditional indigenous communities today because they are recognized as cemeteries and the spirits of the deceased are respected.
Classification and seriation identified five ceramic phases representing the same pottery tradition and permitted construction of a relative chronology that is complemented by 137 radiocarbon dates.
The territorial distributions of the ceramic traditions identified by the PRONAPA on the coastal strip more than forty years ago have been expanded by more recent investigators, but their failure to classify the pottery and apply quantitative analysis and seriation has prevented the kinds of social and settlement interpretations obtained from the survey of the Jamari and other rivers in Amazonia.
For example, age estimates were derived from harpoon head seriations
for Qamaarviit and Kogalik, sites in Frobisher Bay, southeast Baffin Island, despite the presence of European material (e.
Temporal control was, in the main, established using Craig Johnson's unpublished ceramic-based temporal seriations
and supported by the research of Ann Ramenofsky (1987).
These structures are usually clusters and seriations, the first being groups of units--e.
Correspondence analysis, on the contrary, prevents preconceived ideas about existing structures as it does not create seriations and clusters if they do not exist.
One of these points of view is spatial analysis--that is, how the clusters or seriations detected in the correspondence analysis are distributed throughout the territory.
It has proved its value at analyzing and organizing huge samples of data, providing interpretative frameworks which go beyond the seriation of material culture, to give a deeper insight into the internal dynamics which lie beneath item distribution.