Q24: What is the difference between SAS procedures and functions?Ī: Function expects argument values to be supplied across an observation in a SAS data set while procedure assumes the value of one variable per observation.
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Q23: How to include or exclude a particular variable in a data set?Ī: To include or exclude the particular data set you can use Drop, Keep statement, and data set options. Q22: What are the SAS features do you use to check errors and data validation?Ī: To check errors, use the log, and for data validation, we use Proc Means, Proc Freq, or sometimes Proc print to see how the data appears. When you identify DSD, SAS treats two successive delimiters in a row as a missing value, it ignores quotation marks as part of your data, and it also ignores delimiters in data values enclosed in quotation marks. Q21: What is the use of DSD in SAS?Ī: Delimiter Sensitive Data (DSD) option edits how SAS handles delimiters when we use list input and sets the existing delimiter to a comma. The user has great options that can be used to customize the procedure to produce. Q20: What is the use of function Proc summary?Ī: Proc summary is used to create tables of summary statistics as well as complex summary data sets. Q19: What is the method to debug and test your SAS program?Ī: By using Obs=0, you can debug and test your SAS program and the system option to trace the program execution in the log. An input buffer occurs at the time of compilation that carries a record from an external file. It builds a dataset of single observation at a time. Q18: Define PDV?Ī: The Program Data Vector (PDV) is an analytical area of memory that is created during data processing. Q17: What is the use of the %include statement?Ī: %INCLUDE statement reads a whole file into the current SAS program you are running and submits the file to the SAS System right away. While the ‘CEIL’’ function remits the smallest integer greater than or equal to the argument. Q16: Differentiate between CEIL and FLOOR function in SAS?Ī: The ‘’FLOOR’’ returns the highest integer less than or equal to the argument. Make sure to assign both a library and data set name to make the data set permanent.Ī: RUN-Group processing enables to submit a PROC step by using a RUN statement without closing the procedure. Q14: How to create a permanent SAS data set?Ī: Two steps used to create a permanent SAS data set The main aim of factor analysis is data reduction and summarization. Q13: What is factor analysis?Ī: Factor analysis is a common term for a family of a statistical method associated with the reduction of a set of an observable variable in terms of a small number of inactive factors. It controls a library of routine that performs takes on SAS data set option such as sorting, listing, and summarizing.
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We are not using Fsview option vigorously.Ī: In SAS, PROC steps process and analyze data as a SAS data set.We are not checking the log after submitting the program.Q11: What are the basic programming errors appears in SAS?Ī: Basic programming errors appear in SAS are as follows: Q10: What are the default statistics that PROC MEANS creates?Ī: The default statistics that PROC MEANS creates are as follows: Q9: What are the ways to do a “table lookup” in SAS?Ī: There are five ways to do a “ table lookup” in SAS that includes: Q8: State the difference between Informat and Format?Ī: An Informat is a specification that is to read the raw data, while a Format is a layout specification for how a variable should be displayed. FORMAT procedure for creating value formatsĪ: A SAS data set is a file consisting of two parts.
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Q6: List out some fundamental concept of SAS?Ī: Some fundamental concept of SAS include, Q5: Name types of category in which SAS Informats have?Ī: SAS informats are of three categories, = DATA step, that recovers and manipulates data. Q4: What is the basic structure of the SAS base program?Ī: The basic structure of SAS consists of
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SAS Interview Questions and Answers Q1: What is SAS and What are the functions of SAS?Ī: Statistical Analysis System(SAS) is a combined set of software products.