Embodiments relate to methods and apparatuses creating and analyzing target groups, for example as relied upon in conducting marketing campaigns. Certain embodiments allow predictive definition of a target group based upon an underlying complex mathematical model, which may reference large data volumes regarding individual targets in an underlying database. An interface affords simplified visualizations of the target group, for example circles of varying diameter representing target group size. Adjustable graphic elements (e.g., sliders) in dashboard views may allow predictive definition of the target group based upon inputs such as marketing cost, target group size, and/or expected revenue, etc. Once defined and stored, target groups may be explored in an interactive manner through application of filter criteria, thereby promoting familiarity with target group characteristics. Embodiments allow users who are not modeling experts, to nevertheless interact efficiently with large data volumes in order to intuitively define and/or explore a target group.