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13) Explain what Proc glm does?Īns: Proc glm performs simple and multiple regression, analysis of variance (ANOVAL), analysis of covariance, multivariate analysis of variance and repeated measure analysis of variance. 12) Explain what is the use of function Proc summary?Īns: The syntax of proc summary is same as that of proc means, it computes descriptive statistics on numeric variables in the SAS dataset. While, PROC CONTENTS display information about an SAS dataset. 8) Explain how you can debug and test your SAS program?Īns: You can debug and test your SAS program by using Obs=0 and systems options to trace the program execution in log 9) Mention what is the difference between nodupkey and nodup options?Īns: The difference between the NODUP and NODUPKEY is that, NODUP compares all the variables in our dataset while NODUPKEY compares just the BY variables 10) Mention the validation tools used in SAS?Īns: For DataSet : Data set name/ debug Data set: Name/stmtchkįor Macros: Options: mprint mlogic symbolgenġ1) Explain what does PROC print, and PROC contents are used for?Īns: To display the contents of the SAS dataset PROC print is used and also to assure that the data were read into SAS correctly.
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7) In SAS explain which statement does not perform automatic conversions in comparisons?Īns: In SAS, the “where” statement does not perform automatic conversions in comparisons. The PDV is created following the input buffer creation 6) Mention what are the data types does SAS contain?Īns: The data types in SAS are Numeric and Character. An input buffer is created at the time of compilation which holds a record from an external file. At the time, SAS creates a database of one observation at a time. 5) Explain what is PDV?Īns: The logical area in the memory is represented by PDV or Program Data Vector. There should be at least one space between each word or statementįor example: Infile ‘H: \StatHW\yourfilename.dat’ 4) Explain what is Data Step?Īns: The Data step creates an SAS dataset which carries the data along with a “data dictionary.” The data dictionary holds the information about the variables and their properties.A data statement that defines your data set.There should be a semi-colon at the end of every line.Operation research and Project managementĢ) Explain what is the basic structure of SAS programing?ģ) What is the basic syntax style in SAS?Īns: To run program successfully, and you have following basic elements:.Business planning, forecasting and decision support.Statistical analysis, econometrics and data mining.Information retrieval and data management.
Analysis using sas interview questions answers software#
1) Explain what is SAS? What are the functions does it performs?Īns: SAS means Statistical Analysis System, which is an integrated set of software products.