The data set [2, 3, 4, 9, 15, 22, 25, 31, 33] can be categorized into three groups: low (2, 3, 4), medium (9, 15, 22), and high (25, 31, 33).
[2, 3, 4, 9, 15, 22, 25, 31, 33]
Categorizzare lo spettro del dato set di dati.