In Figure 1 the y-axe indicates the estimation of the relative efficiency of each
DMU (Unit). The commercial banks evaluated are indicated in the x-axe. Column
1 denotes Attica Bank (Unit 1), column 2 denotes Emporiki Bank (Unit 2) etc.
Additionally we notice that the commercial banks that are efficient according to
Farrell (non zero slacks) are: ATE Bank (Unit-3), EFG Eurobank Ergasias (Unit-
5), National Bank of Greece (Unit-7), Piraeus Bank (Unit-12) and HSBC (Unit-
19). Emporiki Bank (Unit-2) appears to be the less efficient and MARFIN Egnatia
Bank (Unit-18) is close to become relatively efficient.