Select the best answer for each question. After completing the quiz, check your answers using the answer key in the appendix.
  1. According to the data set descriptions below, which of the variables that are listed qualify as BY variables for a DATA step match-merge?
    Variable Type Length
    Variable Type Length
    1. Code and IDnum
    2. Manager and Supervisor
    3. Manager and IDnum
    4. There are no variables that are common to both of these data sets.
  2. Suppose you want to merge Dataset1, Dataset2, and Dataset3. Also suppose that Dataset1 and Dataset2 have the common variable ...

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