Final answer:
Grouping together 20 numbers in 4 smaller groups is an example of data grouping or categorization, which allows for organized and effective analysis of the data.
Step-by-step explanation:
Grouping together 20 numbers in 4 smaller groups is an example of data grouping or categorization.
This can be seen in various situations, such as organizing test subjects into different groups for an experiment, polling a specific number of people in a market research study, or selecting students from different classifications in a survey.
This process allows data to be organized and analyzed more effectively, helping to identify patterns or trends within the groups.