Chapter 6: Creating SAS Data Sets from External Files

  1. Correct answer: a
    You assign a fileref by using a FILENAME statement in the same way that you assign a libref by using a LIBNAME statement.
  2. Correct answer: d
    Like LIBNAME statements, FILENAME statements are global; they remain in effect until changed or canceled, or until the SAS session ends.
  3. Correct answer: b
    You use an INFILE statement to specify the raw data file to be read. You can specify a fileref or an actual filename (in quotation marks). The OBS= option in the INFILE statement enables you to process only records 1 through n.
  4. Correct answer: d
    The keyword _NULL_ in the DATA statement enables you to use the power of the DATA step without actually creating a SAS ...

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