I would use TRANSPOSE if the variables are less use arrays if the var are more ……………. If you were told to create many records from one record, show how you would do this using arrays and with PROC TRANSPOSE? What is the different between functions and PROCs that calculate the same simple descriptive statistics?įunctions can used inside the data step and on the same data set but with proc’s you can create a new data sets to output the results. Sort them once, can use firstobs = and obs = ,ġ2. What are some good SAS programming practices for processing very large data sets? of the variables later labels all that kind of info inside the dataset and you can look at that info using proc contents procedure. SAS is considered self documenting because during the compilation time it creates and stores all the information about the data set like the time and date of the data set creation later No. Following the data step then you can avoid the usage of the run statement.ġ0. When SAS editor looks at Run it starts compiling the data or proc step, if you have more than one data step or proc step or if you have a proc step. Does SAS ‘Translate’ (compile) or does it ‘Interpret’? Identify statements whose placement in the DATA step is critical.Ĩ. Approximately what date is represented by the SAS date value of 730?ħ. The PDV is created following the input buffer creation.Ħ. 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. The logical area in the memory is represented by PDV or Program Data Vector. The Data step creates a SAS dataset which carries the data along with a “data dictionary.” The data dictionary holds information about the variables and their properties. There should be at least one space between each word or statementįor example: In file ‘H: \StatHW\yourfilename.dat’.A data statement that defines your data set.There should be a semi-colon at the end of every line.To run the program successfully, and you have the following basic elements: =DATA step, which recovers & manipulates data.ģ. What is the basic structure of the SAS base program? Operation research and Project managementĢ.Business planning, forecasting, and decision support.Statistical analytics, econometrics and data mining.Information retrieval and data management.
#SAS INTERVIEW QUESTIONS RETAIN SOFTWARE#
SAS means Statistical Analysis System, which is an integrated set of software products.
What is SAS? What are the functions does it performs? SAS Interview Questions for freshers experienced :-ġ.
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