How do I prepare for a SAS interview?
SAS Interview Questions
- List down the reasons for choosing SAS over other data analytics tools.
- What is SAS?
- What are the features of SAS?
- Mention few capabilities of SAS Framework.
- What is the function of output statement in a SAS Program?
- What is the function of Stop statement in a SAS Program?
What are _numeric_ and _character_ and what do they do?
1. _NUMERIC_ specifies all numeric variables that are already defined in the current DATA step. 2. _CHARACTER_ specifies all character variables that are currently defined in the current DATA step.
What are the SAS interview questions?
SAS Interview Questions for Experienced
- What do you mean by SAS Macros and why to use them?
- Write different ways to create micro variables in SAS Programming?
- Explain how %Let and macro parameters can be used to create micro variables in SAS programming?
- Name some SAS system options that are used to debug SAS Micros.
What would be the result of the following SAS function given that 31 Dec 2000 is Sunday )?
What would be the result of the following SAS function (given that 31 Dec, 2000 is Sunday)? Years = 1 since both the days are in different calendar years.
What is a SAS dataset?
A SAS data set is a SAS file stored in a SAS library that SAS creates and processes. A SAS data set contains data values that are organized as a table of observations (rows) and variables (columns) that can be processed by SAS software.
What is the purpose of trailing and @@ in SAS?
SAS introduces two line-holding specifiers: The trailing sign, @ : This sign holds the input record for the execution of the next INPUT statement. The double trailing sign, @@: This sign holds the input record for the execution of the next record statement, even across iteration of the data step.
What can be the size of largest dataset in SAS?
“The maximum size of a SAS data set in a Direct Access Bound Library is limited by the maximum size of the library, which is about 2986 GB on 3390 volumes.”
How many variables are in the PDV?
two automatic variables
SAS uses the PDV, a memory area on your computer, to build the new data set. There are two automatic variables, _N_ and _ERROR_, inside the PDV.
What are the two parts of a SAS data set?
There are two types of SAS Data Set: Descriptor Portion and Data Portion.
- Descriptor Portion. The descriptor portion of a SAS data set contains vital information of the data set, such as the name of the data set, the date and time at which the data set was created.
- Data Portion.
How do I RENAME a column in SAS?
To do so, you’ll want to use the RENAME= option. As its name suggests, the RENAME= option allows you to change the variable names within a SAS data set. RENAME = (old1=new1 old2=new2 …. oldk=newk);
What is the difference between Missover and Truncover in SAS?
The main difference between MISSOVER and TRUNCOVER occurs when you have variable length records and are using formatted or column input. TRUNCOVER reads “partial” data that falls at the end of the record, whereas MISSOVER sets the value to missing.
How many rows can a SAS dataset have?
The observation count includes both observations (rows) and deleted observations. The maximum number of observations that can be counted for a SAS data file is 2 63–1 or approximately 9.2 quintillion observations. Exceeding that number is extremely unlikely for most users.
How do I compress a SAS dataset?
To create a compressed SAS data set, use the COMPRESS=YES option as an output DATA set option or in an OPTIONS statement. Compressing a data set reduces its size by reducing repeated consecutive characters or numbers to 2-byte or 3-byte representations.
What are the interview questions asked in SAS?
It includes questions ranging from simple theoretical concepts to tricky interview questions which are generally asked in freshers and experienced SAS programmers’ interview. 1. Difference between INPUT and INFILE
What are the topics covered in the SAS Course?
It covers basic, intermediate and advanced concepts of SAS which outlines topics on reading data into SAS, data manipulation, reporting, SQL queries and SAS Macros. It includes questions ranging from simple theoretical concepts to tricky interview questions which are generally asked in freshers and experienced SAS programmers’ interview. 1.
What are the disadvantages of using SAS observation?
The disadvantages include not being able to use the SAS observation number to access an observation. The CPU time required to prepare compressed observations for input/output observations is increased because of the overhead of compressing and expanding the observations.
What is an example of a SAS/ETS study?
For example, an environmental quality study might use SAS/ETS software’s time-series analysis tools to analyze pollution emissions data. A pharmacokinetic study might use SAS/ETS software’s features for nonlinear systems to model the dynamics of drug metabolism in different tissues.