In general, the viability given to each group by the
robust analysis is accepted (60% for group 1, 67% for
group 2, 59% for group 3). The cophenetic correlation
value (r) between the similarity matrix and the original
matrix data was r=0.87, which is “good” according to
Nuñez (2011) who established the value r as: 0.9≤r very
good, 0.8≤r