EXAMINE Statement

Details of the FACTEX Procedure

EXAMINE Statement

EXAMINE <options> ;

You use the EXAMINE statement to specify the characteristics of the design that are to be listed in the output.

The options are remembered by the procedure; once specified, they remain in effect until you submit a new EXAMINE statement with different options or until you turn off all EXAMINE options by submitting just

examine;

The following options are available.

ALIASING<(d)>

A<(d)>

lists the alias structure of the design, which identifies effects that are confounded with one another and are thus indistinguishable.

You can specify (d) immediately after the ALIASING option for a listing of the alias structure with effects up to and including order d. For example, the following statement requests aliases for up to fourth-order effects (for example, A*B*C*D):

examine aliasing(4);

Each line of the alias structure is listed in the form

effect=effect= ... =effect

for as many effects as are aliased with one another.

The default value for d is determined automatically from the model as follows:

If you specify the model with a resolution number r in the MODEL statement, then d is the integer part of (r+1)/2.
If you specify the model with a list of effects in the MODEL statement, then d is the larger of
- one plus the largest order of an effect to be estimated
- the largest order of an effect considered to be nonnegligible

where main effects have order 1, two-factor interactions have order 2, and so on. For details on aliasing, see "Alias Structure" .

CONFOUNDING

C

lists the confounding rules used to construct the design. For the definition of confounding rules, see "Confounding Rules" and "Suitable Confounding Rules" .

DESIGN

D

lists the points in the design in standard order with the factor levels coded. For a description of the randomization and coding rules, see "OUTPUT Statement" .

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