SAS Institute Updated A00-215 Exam Questions and Answers by ember

Option B is correct. In SAS, variable names must be 1 to 32 characters in length. The other statements about variable names are incorrect:

• A is incorrect because variable names are not case sensitive in SAS.
• C is incorrect because variable names are required when you create a data set; each column must have a unique name.
• D is incorrect because variable names cannot start with a number, though they can start with an underscore or a letter.

References:

• SAS 9.4 documentation on SAS variables.

In SAS, the correct syntax for assigning labels to variables is to use the LABEL statement within a DATA step or a PROC step. Labels are assigned to variables using the format variable='label'. The correct syntax for the LABEL statement is represented by option B.

Here’s the breakdown:

• FName=’First Name’ correctly assigns the label First Name to the variable FName.
• LName=’Last Name’ correctly assigns the label Last Name to the variable LName.
• Each variable and label pair is separated by a space, and the overall statement ends with a semicolon, which is the proper syntax for a LABEL statement in SAS.

Options A, C, and D are incorrect due to various syntax errors like the use of the wrong character for the apostrophe, missing apostrophes, incorrect punctuation, and in the case of option C, an incorrect conjunction ‘and’ which is not used in LABEL statements.

References:

• SAS 9.4 documentation for the LABEL statement: SAS Help Center: LABEL Statement

The correct answer is option D, which uses the LIBNAME statement correctly to assign a library reference to an Excel workbook and specifies the correct syntax for accessing a worksheet within that workbook. The syntax for this option is:

libname exlib xlsx "c:\class.xlsx";

proc print data=exlib.class_test;

run;

This code snippet assigns the library reference exlib to the Excel workbook located at c:\class.xlsx using the XLSX engine. The PROC PRINT step is then used to display the contents of the worksheet named CLASS_TEST within that workbook. The library reference exlib combined with the dataset name class_test (following the .) correctly specifies the worksheet to be printed. The other options (A, B, C) are incorrect due to various reasons: incorrect syntax for the LIBNAME statement, incorrect specification of the dataset to be printed, and incorrect path specifications.References: SAS 9.4 Guide to Software Updates.

The correct answer is C. To create the NODONATIONS dataset, which includes only the employees who did not make any donations, a merge operation is used with a conditional statement to filter out those records. The syntax if inE=1 and inD=0; ensures that the merged dataset includes only the observations from the EMPLOYEES dataset that do not have a corresponding observation in the DONATIONS dataset. This is achieved using data step processing with the in= option to create temporary variables that indicate whether the data is coming from the input dataset.

In the other options:

• A is incorrect because inE=0 and inD=0 will never be true after a merge since at least one of the datasets must contribute to the merged observation.
• B lacks the necessary conditional logic to filter out employees with donations.
• D is incorrect because if inE=1 and inD=1; would actually select employees who made donations, the opposite of what we want.

References:

• SAS documentation on merging data sets using the DATA step.