2. The method of claim 1 wherein the displayed control enables a user to select a named subset of the population among a plurality of named subsets of the population organized into a hierarchy of population subsets.
1. A method in a computing system, having a memory and a processor, for exploring information relating to a population, comprising: displaying a graphical report reflecting information relating to the entire population; in conjunction with the graphical report, displaying a control enabling a user to select a named subset of the population among a plurality of named subsets of the population; receiving, with the processor, input indicating that the user has operated the displayed control to select a named subset of the population; in response to receiving the input, displaying in place of the graphical report reflecting information relating to the entire population a graphical report reflecting information relating to only the selected named subset of the population; displaying a control enabling a user to select one of a plurality of report types; and receiving input indicating that the user has operated the displayed control to select a report type, and wherein the displayed graphical report reflecting information relating to the entire population is of the selected report type.