Abstract: Survey accuracy of small sample sizes may be amplified by including, excluding, or weighting survey responses of respondents responsive to characteristics of the respondent being correlated with or not correlated with characteristics of the population determined from aggregated behavioral histories of the population, resulting in favoring survey results of individuals that are truly representative of the larger population and excluding results from outliers. Search queries from devices in a particular region may be aggregated to identify common searches, building a model of characteristics of the regional population without requiring any private or confidential data of the population.