You and frank examine the data you've collected. you discover that two main groups of people are buying healthy-food cookbooks: parents of small children and the elderly. what kind of unsupervised data mining technique are you and frank engaged in?

The type of technique related to data mining that the 2 people used is classification. Other mining techniques include clustering, association, predicting, sequential patterns, and others. Classification is the categorization of data according to the set groups.