155Visualization of Multicriterial Classification
and maximum values, mean, deviation—Figure 14.5) are continuously decreasing from group A
to group C, while the difference between the gures of volume (inv-vol) in each groups are not
signican,t and no trend can be recognized in the case of value (invvalue_SCP).
VISUalIZaTIon of THe claSSIfIcaTIon of mro
Correlation analysis provided the three independent variables that can be taken into account to
determine the categories of MRO items. Cluster analysis as a part of the screening process has
been used to make an estimation for the groups of items advanced. As a result, the original set has
been reduced by eliminating the outliers to come up with a subset consisting of 531 items. Applying
the ...