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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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STATISTICS Subcommand<br />

EXAMINE 525<br />

STATISTICS requests univariate statistics and determines how many extreme values are<br />

displayed. DESCRIPTIVES is the default. If you specify keywords on STATISTICS, only the<br />

requested statistics are displayed.<br />

DESCRIPTIVES Display the Descriptives table showing univariate statistics (the mean, median,<br />

5% trimmed mean, standard error, variance, standard deviation, minimum,<br />

maximum, range, interquartile range, skewness, skewness standard<br />

error, kurtosis, and kurtosis standard error). This is the default.<br />

EXTREME(n) Display the Extreme Values table presenting cases with the n largest and n<br />

smallest values. If n is omitted, the five largest and five smallest values are<br />

displayed. Extreme cases are labeled with their values for the identification<br />

variable if the ID subcommand is used or with their values for the system<br />

variable $CASENUM if ID is not specified.<br />

ALL Display the Descriptives and Extreme Values tables.<br />

NONE Display neither the Descriptives nor the Extreme Values tables.<br />

Example<br />

EXAMINE VARIABLE=FAILTIME /ID=BRAND<br />

/STATISTICS=EXTREME(10) /PLOT=NONE.<br />

• STATISTICS identifies the cases with the 10 lowest and 10 highest values for FAILTIME.<br />

These cases are labeled with the first characters of their values for the variable BRAND.<br />

The Descriptives table is not displayed.<br />

CINTERVAL Subcommand<br />

CINTERVAL controls the confidence level when the default DESCRIPTIVES statistics is<br />

displayed. CINTERVAL has a default value of 95.<br />

• You can specify a CINTERVAL value (n) between 50 and 99.99 inclusive. If the value you<br />

specify is out of range, the program issues a warning and uses the default 95% intervals.<br />

• If you specify a keyword on STATISTICS subcommand that turns off the default<br />

DESCRIPTIVES, the CINTERVAL subcommand is ignored.<br />

• The confidence interval appears in the output with the label n% CI for Mean, followed by<br />

the confidence interval in parentheses. For example,<br />

95% CI for Mean (.0001,.00013)<br />

The n in the label shows up to six decimal places. That is, input /CINTERVAL 95 displays<br />

as 95% CI while input /CINTERVAL 95.975 displays as 95.975% CI.<br />

MESTIMATORS Subcommand<br />

M-estimators are robust maximum-likelihood estimators of location. Four M-estimators are<br />

available for display in the M-Estimators table. They differ in the weights they apply to the

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