PROC ASTORE is used to score new observations in SAS. Which PROC ASTORE statement option specifies where the model's input variables and types are defined?
Select an answer to reveal the explanation.
Short Explanation
Here's the deal — the RSTORE= option points to the ASTORE object, and that object is a self-contained model artifact. It carries the input variable names, types, and formats, so PROC ASTORE can validate and prepare the scoring input.
Full Explanation
The RSTORE= option is correct because the ASTORE object it references is a self-contained model artifact that includes the model's input variable names, types, and expected formats. PROC ASTORE reads this metadata from the ASTORE to validate and prepare the scoring input. Requiring a separate PROC ASTORE DESCRIBE step first is wrong because DESCRIBE can output this information, but it is not required before scoring. The COPYVARS= option is wrong because it lists which variables from the input DATA= dataset are passed through to the output, not the model input schema. The FORMAT statement option is wrong because FORMAT statements format output variables, not define model input schemas.