Chapter 22: Conditioning Raw Data Files

  1. Correct answer: d
    In order to create one observation per detail record, it is necessary to distinguish between header and detail records. Use a RETAIN statement to keep header data as part of each observation until the next header record is encountered. You also need to use the @ line-hold specifier to hold the current record so that other values in the record can be read.
  2. Correct answer: a
    An INPUT statement is used to read the value for code. The single @ sign at the end of the INPUT statement holds the current record for a later INPUT statement in the same iteration of the DATA step.
  3. Correct answer: b
    The IF-THEN statement defines the condition that Record equals C and executes an INPUT ...

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