SAS Certification Prep Guide, 4th Edition

Chapter 14: Combining Data Vertically

1. Correct answer: c

   When a FILENAME statement is used to assign a fileref to multiple raw data files, the list of files must be enclosed in a single set of parentheses. Each filename specified must be enclosed in quotation marks.
2. Correct answer: d

   The FILEVAR= option enables you to dynamically change the currently opened input file to a new input file. The FILEVAR= variable must contain a character string that is a physical filename. Like automatic variables, the FILEVAR= variable is not written to the data set.
3. Correct answer: b

   The DO statement creates the index variable x and assigns it the values of 8, 9, and 10. The assignment statement assigns the name of a raw data file to Readfile ...