1. A conjoint analysis method, comprising: (a) presenting a set of hypothetical products to a potential consumer, wherein each of the hypothetical products comprises N hypothetical features comprising a first hypothetical feature and a second hypothetical feature, and each of the N hypothetical features has at least two levels comprising a first level and a second level; (b) instructing the consumer to perform a task that is designed to elicit from the consumer information pertaining to the consumer's preference for each of the hypothetical products, whereby, as a result of the consumer performing the task, an observation for each hypothetical product is obtained, wherein each observation includes at least one data point that reflects the consumer's preference for the hypothetical product corresponding to the observation; (c) selecting a subset of the observations to use as a training sample; (d) selecting a subset of the observations to use as a rule selection sample; (e) forming a TAB using each observation included in the training sample, wherein the TAB stores: first preference information corresponding to the consumer's preference for the first level of the first hypothetical feature, second preference information corresponding to the consumer's preference for the second level of the first hypothetical feature, third preference information corresponding to the consumer's preference for the first level of the second hypothetical feature, and fourth preference information corresponding to the consumer's preference for the second level of the second hypothetical feature; (f) selecting a rule from a set of rules; (g) selecting an observation from the rule selection sample; (h) predicting the consumer's preference for the hypothetical product corresponding to the observation selected from the rule selection sample using the TAB, the selected rule, and the N hypothetical features of said hypothetical product for which the prediction is being made; and (i) determining the accuracy of the prediction by comparing the prediction to the observation selected from the rule selection sample.