SAS Base Programming for SAS参考.doc

SAS Base Programming for SAS 9 Item 1 The following program is submitted. data test; input name $ age; cards; John +35 ; run; Which values are stored in the output data set? name age --------------------- John 35 name age --------------------- John (missing value) name age --------------------- (missing value) (missing value) The DATA step fails execution due to data errors. correct_answer = A Item 2 The following observation is stored in a SAS data set named EMPLOYEES: LNAME FNAME JOBCODE --------------------------------- Whitley Sam na1 If the DATA step below is executed, what will be the value of the variable JOBDESC in the output SAS data set when this observation is processed: data navigate; set employees; if jobcode = NA1 then jobdesc = Navigator; run; navigator Navigator NAVIGATOR a missing value correct_answer = D Item 3 The following SAS program is submitted: proc format; value score 1 - 50 = Fail 51 - 100 = Pass; run; Which one of the following PRINT procedure steps correctly applies the format? proc print data = sasuser.class; var test; format test score; run; proc print data = sasuser.class; var test; format test score.; run; proc print data = sasuser.class format = score; var test; run; proc print data = sasuser.class format = score.; var test; run; correct_answer = B Item 4 Given the following DATA step: data loop; x = 0; do index = 1 to 5 by 2; x = index ; end; run; Upon completion of execution, what are the values of the variables X and INDEX in the SAS data set named LOOP? x = 3, index = 3 x = 3, index = 4 x = 5, index = 5 x = 5, index = 6 x = 5, index = 7 correct_answer = E Item 5 Given that the data set named ONE contains 10 observations and the data set named TWO contains 10 observations, how many observations will be contained in the data set named COMB