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SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

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1100 NPAR TESTS<br />

Example<br />

• Under the null hypothesis for large sample sizes, Z is approximately normally distributed<br />

with a mean of 0 and a variance of 1.<br />

NPAR TESTS WILCOXON=A B WITH C D (PAIRED).<br />

• This example pairs A with C and B with D. If PAIRED were not specified, it would also<br />

pair A with D and B with C.<br />

STATISTICS Subcommand<br />

STATISTICS requests summary statistics for variables named on the NPAR TESTS command.<br />

Summary statistics are displayed in the Descriptive Statistics table before all test output.<br />

• If STATISTICS is specified without keywords, univariate statistics (keyword<br />

DESCRIPTIVES) are displayed.<br />

DESCRIPTIVES Univariate statistics. The displayed statistics include the mean, maximum,<br />

minimum, standard deviation, and number of valid cases for each variable<br />

named on the command.<br />

QUARTILES Quartiles and number of cases. The 25th, 50th, and 75th percentiles are displayed<br />

for each variable named on the command.<br />

ALL All statistics available on NPAR TESTS.<br />

MISSING Subcommand<br />

MISSING controls the treatment of cases with missing values.<br />

• ANALYSIS and LISTWISE are alternatives. However, each can be specified with INCLUDE.<br />

ANALYSIS Exclude cases with missing values on a test-by-test basis. Cases with missing<br />

values for a variable used for a specific test are omitted from that test. On<br />

subcommands that specify several tests, each test is evaluated separately.<br />

This is the default.<br />

LISTWISE Exclude cases with missing values listwise. Cases with missing values for<br />

any variable named on any subcommand are excluded from all analyses.<br />

INCLUDE Include user-missing values. User-missing values are treated as valid values.<br />

SAMPLE Subcommand<br />

NPAR TESTS must store cases in memory. SAMPLE allows you to select a random sample of<br />

cases when there is not enough space on your computer to store all the cases. SAMPLE has no<br />

additional specifications.<br />

• Because sampling would invalidate a runs test, this option is ignored when the RUNS<br />

subcommand is used.

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