SAS Base Programming Challenge

What is the purpose of the DATA step in SAS?

• To generate reports automatically in SAS.

• To visualize data using graphs in SAS.

• To create and manipulate datasets in SAS.

• To analyze statistical data in SAS.

How can you create a new data set from an existing one in SAS?

• Use the DATA step with the SET statement to create a new data set from an existing one.

• Utilize the IMPORT procedure to create a new data set from an existing one.

• Apply the SQL procedure to generate a new data set from an existing one.

• Use the PROC step to create a new data set from an existing one.

What function would you use to read a CSV file into SAS?

• PROC SQL

• PROC EXPORT

• PROC IMPORT

• DATA STEP

Describe the difference between a temporary and a permanent data set in SAS.

• Temporary data sets are always stored in a permanent library.

• Temporary data sets are session-specific and deleted after the session ends, while permanent data sets are stored in a specified library and persist beyond the session.

• Temporary data sets can be accessed after the session ends.

• Permanent data sets are deleted after the session ends.

What is the purpose of PROC MEANS in SAS?

• To create visualizations of data in SAS.

• To import data from external sources into SAS.

• To perform data cleaning and transformation in SAS.

• To calculate descriptive statistics for numeric variables in a dataset.

What is the difference between PROC PRINT and PROC REPORT in SAS?

• PROC PRINT displays data simply, while PROC REPORT offers advanced formatting and summarization options.

• PROC PRINT is used for data input, while PROC REPORT is for data output.

• PROC PRINT can only handle numeric data, whereas PROC REPORT can handle both numeric and character data.

• PROC PRINT generates graphs, while PROC REPORT is used for statistical analysis.

How do you calculate the mean and standard deviation of a variable in SAS?

• Use PROC UNIVARIATE DATA=your_dataset; VAR your_variable; RUN; to find mean and median.

• Use PROC SUMMARY DATA=your_dataset; VAR your_variable; RUN; for mean only.

• Calculate mean and standard deviation using PROC PRINT DATA=your_dataset; VAR your_variable; RUN;.

• Use PROC MEANS DATA=your_dataset; VAR your_variable; RUN; to calculate mean and standard deviation.

What statement would you use to create a summary report in SAS?

• PROC SUMMARY or PROC MEANS

• PROC DATA

• PROC PRINT

• PROC REPORT

How can you import an Excel file into SAS?

• Use PROC IMPORT with the appropriate options to import an Excel file into SAS.

• Use DATA step to manually enter data into SAS.

• Import the Excel file using a text editor before loading it into SAS.

• Copy and paste the Excel data directly into a SAS program.

What is the role of the PROC FREQ procedure in generating summary reports?

• PROC FREQ performs data cleaning and transformation tasks.

• PROC FREQ creates visualizations for time series data.

• PROC FREQ generates linear regression models for continuous data.

• PROC FREQ generates frequency counts and summary reports for categorical data.