Question 1: What is the purpose of a 'DATA' step in SAS?

• To display results of a procedure.
• To define the format of the output.
• To create datasets and manipulate data. (Correct answer)
• To connect to a database.

Correct answer: To create datasets and manipulate data.

The 'DATA' step is used to create datasets, read and manipulate data in SAS.

Question 2: Which of the following is the correct syntax to read in a CSV file in SAS?

• proc import datafile='file.csv';
• data import; infile 'file.csv';
• proc import datafile='file.csv' out=mydata;
• proc import file='file.csv';

This question tests knowledge of how to import CSV files into SAS.

Question 3: How would you create a new variable in a SAS 'DATA' step?

• newvar = oldvar + 10;
• newvar = oldvar;
• newvar = 'value';
• all of the above. (Correct answer)

Correct answer: all of the above.

This question tests knowledge of adding variables in the 'DATA' step.

Question 4: What is the function of 'PROC PRINT' in SAS?

• It performs statistical analysis.
• It prints the contents of a dataset. (Correct answer)
• It sorts the dataset.
• It merges two datasets.

Correct answer: It prints the contents of a dataset.

The 'PROC PRINT' step is used to display the contents of a dataset in SAS.

Question 5: What is the correct way to define a macro variable in SAS?

• %let var = value;
• let var = value;
• var = value;
• %define var = value;

This question tests knowledge of creating macro variables in SAS.

Question 6: Which of the following SAS procedures is used for descriptive statistics?

• PROC MEANS. (Correct answer)
• PROC PRINT.
• PROC SQL.
• PROC UNIVARIATE.

Correct answer: PROC MEANS.

This question checks knowledge of procedures used for descriptive statistics in SAS.

Question 7: What does the 'INFILE' statement do in SAS?

• It specifies where to store the dataset.
• It identifies the external file to read data from. (Correct answer)
• It sorts the input file.
• It merges multiple files.

Correct answer: It identifies the external file to read data from.

The 'INFILE' statement is used to specify the file to read in a 'DATA' step.

Question 8: Which SAS function would you use to compute the mean of a numeric variable?

• MEAN.
• AVG.
• PROC MEANS.
• all of the above. (Correct answer)

Correct answer: all of the above.

This question tests knowledge of statistical functions in SAS.

Question 9: How do you check for missing values in a dataset in SAS?

• Using the 'IS MISSING' function. (Correct answer)
• Using the 'IF' statement.
• Using the 'MISSING' function.
• None of the above.

Correct answer: Using the 'IS MISSING' function.

This question checks knowledge of identifying missing values in a dataset.