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Using Spanish Surname Ratios to Estimate Proportion Hispanic in California Cities via Bayes Theorem *
Author(s) -
Grofman Bernard,
Garcia Jennifer
Publication year - 2015
Publication title -
social science quarterly
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.482
H-Index - 90
eISSN - 1540-6237
pISSN - 0038-4941
DOI - 10.1111/ssqu.12214
Subject(s) - ethnic group , demography , bayes' theorem , geography , population , identification (biology) , garcia , statistics , sociology , mathematics , bayesian probability , anthropology , humanities , philosophy , botany , biology
Objectives To generate, via application of Bayes Theorem, accurate estimates about the size of Hispanic populations in California cities from very limited data on the surnames of those living in the cities. Methods We make use here of the ratio of those with the name “GARCIA” to those with the name “ANDERSON” in those cities, one of which is far more likely to be Hispanic and one of which is far more likely to be non‐Hispanic. Results For four cities that vary dramatically in their Hispanic populations, using only two common names we are able to estimate the Hispanic population in the cities. Conclusions We lay the background for our surprising results by underscoring common fallacies in using surnames for purposes of ethnic identification, such as the belief that the proportion of bearers of a given name who are Hispanic can be specified as a unique percentage. We show that how “Hispanic” any given name will turn out to be is a function of the overall demography of the subpopulation being analyzed, which will also affect the distribution of names within that subpopulation.