Radius Audience demographic data is inferred based on thousands of public data signals such as language used in posts, bios and comments, relationships and connections demonstrated by public social media behavior, and entity affinity data which are then correlated with established knowledge bases of demographic & psychographic insights.
The tech references a master index of over 100M anonymized and encrypted social profiles which provides a statistically significant analysis of the influencers social following. The percentage of the audience surveyed varies based on the size of the account and is determined based on a 95%+ confidence level on results.