6. A computer-readable storage device having contents adapted to cause a computing system having a processor to perform a method for analyzing survey responses, the computer-readable storage device not constituting a propagating signal per se, the method comprising: receiving a plurality of completed survey responses, each survey response being generated by a person and specifying an answer to each of a plurality of questions, the plurality of questions comprising a question of a first type and a plurality of questions of a second type, the question of the first type having a selected answer that is accurate for a known percentage of people, each of the questions of the second type having a typical answer and an atypical answer; and with the processor, of the survey responses completed, selecting a proper subset of the survey responses to discount such that (a) the number of undiscounted survey responses containing the selected answer to the first question divided by the total number of undiscounted survey responses bears a predetermined relationship to the known percentage, and (b) no survey response not selected specifies more atypical answers to questions of the second type than any selected survey response.
6. A computer-readable storage device having contents adapted to cause a computing system having a processor to perform a method for analyzing survey responses, the computer-readable storage device not constituting a propagating signal per se, the method comprising: receiving a plurality of completed survey responses, each survey response being generated by a person and specifying an answer to each of a plurality of questions, the plurality of questions comprising a question of a first type and a plurality of questions of a second type, the question of the first type having a selected answer that is accurate for a known percentage of people, each of the questions of the second type having a typical answer and an atypical answer; and with the processor, of the survey responses completed, selecting a proper subset of the survey responses to discount such that (a) the number of undiscounted survey responses containing the selected answer to the first question divided by the total number of undiscounted survey responses bears a predetermined relationship to the known percentage, and (b) no survey response not selected specifies more atypical answers to questions of the second type than any selected survey response. 14. The computer-readable storage device of claim 6 wherein the predetermined relationship is that the number of undiscounted responses containing the selected answer to the question of the first type divided by the total number of undiscounted responses is within a predetermined range of the known percentage.