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SAS Certification Prep Guide, 4th Edition by SAS Institute

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Quiz

Select the best answer for each question. After completing the quiz, check your answers using the answer key in the appendix.
  1. Placing the subsetting IF statement at the top rather than near the bottom of a DATA step results in a savings in CPU usage. What happens if the subset is large rather than small?
    1. The savings in CPU usage increases as the subset grows larger because the I/O increases.
    2. The savings in CPU usage decreases as the subset grows larger. However, placing the subsetting IF statement at the top of a DATA step always uses fewer resources than placing it at the bottom.
    3. The savings in CPU usage remains constant as the subset grows larger. However, placing the subsetting IF statement near the bottom of a data ...

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