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[ /MEDIAN [(value)] =var_listBYvariable(value1,value2) ]

The median test is used to test whether independent samples come from
populations with a common median.
The median of the populations against which the samples are to be tested
may be given in parentheses immediately after the
`/MEDIAN`

subcommand. If it is not given, the median will be imputed from the
union of all the samples.

The variables of the samples to be tested should immediately follow the ‘`=`’ sign. The
keyword `BY`

must come next, and then the grouping variable. Two values
in parentheses should follow. If the first value is greater than the second,
then a 2 sample test is performed using these two values to determine the groups.
If however, the first variable is less than the second, then a *k* sample test is
conducted and the group values used are all values encountered which lie in the
range [`value1`,`value2`].