This sample histogram shows how the values of an attribute called OCCUPATION are distributed within a given cluster. It shows that approximately 11% of the occupations are clerical, 13% are craft-based, 13% are executive, 2% are farmers, 7% are machine-based, 11% are professional, 1% are "Protec.", 11% are sales, 3% are tech support, and 3% are in transportation. 10% of occupations are "other." 5% of the occupations are unknown. The sum of the percentages is 100.