This question will ask you to provide a missing option. A business analyst is investigating the differences in sales figures across 8 sales regions. The analyst is interested in viewing the…

Question

Options

• ASolve
• BEstimate
• CSolution
• DEst

• A
  3% (1)
• B
  3% (1)
• C
  87% (33)
• D
  8% (3)

Explanation

In PROC GLM, when a CLASS statement is used, SAS suppresses parameter estimates by default because the model is not full rank (the dummy-coded design matrix is singular). Adding the SOLUTION option to the MODEL statement explicitly tells SAS to display the parameter estimates for each level of the classification variable, which is exactly what the analyst needs.

Why the distractors are wrong:

• A. SOLVE - not a valid PROC GLM model option; SAS will throw an error.
• B. ESTIMATE - ESTIMATE is a valid statement in PROC GLM (used for custom contrasts), but it is not a model option, so placing it after the / here is incorrect.
• D. EST - not a recognized abbreviation; SAS does not accept this shorthand for SOLUTION.

Memory tip: Think of it as asking SAS to show you the solution to the regression system - you need the full SOLUTION keyword, spelled out, because SAS won't abbreviate it for you when the model is overparameterized.

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