The last line of the preceding syntax corresponds to two
options that manage the missing values. These options are
useful when more than one statistical test is specified in the
syntax table. The first option is /MISSING ANALYSIS and
supports that each test is separately evaluated for the
missing values. On the other hand, with the option
/MISSING LISTWISE, each empty box or missing value, for
any variable, is excluded from all analyses. The option that
one will choose depends on the other tests that one needs to
apply. If there is only the Mann‐Whitney statistical test that
has to be carried out, the missing values will be managed in
the same manner, does not matter which of the two options
is selected.