When is it appropriate to create indexes on a SAS data set for efficient processing?

Question

Options

• Aif small subsets of data are often retrieved
• Bif the key variable has very few unique values
• Cif the data are often used for BY group processing
• Dif the SAS data set file page count is less than three pages

• A
  72% (26)
• B
  3% (1)
• C
  17% (6)
• D
  8% (3)

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