Grouping methods are one of the analytical techniques. The grouping methods are techniques "for taking what you have observed and classifying the relevant groups for further study and comparison. A specific type of grouping method uses exploratory study to compare sets of data and to look for patterns and correlations between the data for causal effects."
- ↑ Pass the PMP® Exam: Tools, Tips and Tricks to Succeed by Sean Whitaker, p. 66. (Accessed via Google books on 15 February 2017.)