### 15.12 NPAR TESTS

NPAR TESTS
nonparametric test subcommands
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.
.
[ /STATISTICS={DESCRIPTIVES} ]
[ /MISSING={ANALYSIS, LISTWISE} {INCLUDE, EXCLUDE} ]
[ /METHOD=EXACT [ TIMER [(`n`)] ] ]

`NPAR TESTS`

performs nonparametric tests.
Non parametric tests make very few assumptions about the distribution of the
data.
One or more tests may be specified by using the corresponding subcommand.
If the `/STATISTICS`

subcommand is also specified, then summary statistics are
produces for each variable that is the subject of any test.

Certain tests may take a long time to execute, if an exact figure is required.
Therefore, by default asymptotic approximations are used unless the
subcommand `/METHOD=EXACT`

is specified.
Exact tests give more accurate results, but may take an unacceptably long
time to perform. If the `TIMER`

keyword is used, it sets a maximum time,
after which the test is abandoned, and a warning message printed.
The time, in minutes, should be specified in parentheses after the `TIMER`

keyword.
If the `TIMER`

keyword is given without this figure, then a default value of 5 minutes
is used.