27.03.2013 Views

SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

INTERCEPT Subcommand<br />

GLM: Univariate 657<br />

INTERCEPT controls whether an intercept term is included in the model. If more than one<br />

INTERCEPT subcommand is specified, only the last one is in effect.<br />

INCLUDE Include the intercept term. The intercept (constant) term is included in the<br />

model. This is the default.<br />

EXCLUDE Exclude the intercept term. The intercept term is excluded from the model.<br />

Specification of the keyword INTERCEPT on the DESIGN subcommand<br />

overrides INTERCEPT = EXCLUDE.<br />

MISSING Subcommand<br />

By default, cases with missing values for any of the variables on the GLM variable list are<br />

excluded from the analysis. The MISSING subcommand allows you to include cases with<br />

user-missing values.<br />

• If MISSING is not specified, the default is EXCLUDE.<br />

• Pairwise deletion of missing data is not available in GLM.<br />

• Keywords INCLUDE and EXCLUDE are mutually exclusive.<br />

• If more than one MISSING subcommand is specified, only the last one is in effect.<br />

EXCLUDE Exclude both user-missing and system-missing values. This is the default<br />

when MISSING is not specified.<br />

INCLUDE User-missing values are treated as valid. System-missing values cannot be<br />

included in the analysis.<br />

CRITERIA Subcommand<br />

CRITERIA controls the statistical criteria used to build the models.<br />

• More than one CRITERIA subcommand is allowed. The specifications are accumulated.<br />

Conflicts across CRITERIA subcommands are resolved using the conflicting specification<br />

given on the last CRITERIA subcommand.<br />

• The keyword must be followed by a positive number in parentheses.<br />

EPS(n) The tolerance level in redundancy detection. This value is used for redundancy<br />

checking in the design matrix. The default value is 1E-8.<br />

ALPHA(n) The alpha level. This keyword has two functions. First, it gives the alpha level<br />

at which the power is calculated for the F test. Once the noncentrality parameter<br />

for the alternative hypothesis is estimated from the data, then the power is<br />

the probability that the test statistic is greater than the critical value under the<br />

alternative hypothesis. (The observed power is displayed by default for GLM.)<br />

The second function of alpha is to specify the level of the confidence interval.<br />

If the alpha level specified is n, the value ( 1 – n)<br />

×<br />

100 indicates the level of<br />

confidence for all individual and simultaneous confidence intervals generated

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!