Question 81: Which method helps to copy blocks of data?
Answer:
The block I/O method is used to copy blocks of data.
Question 82: What is max() function?
Answer:
The max() function is a built-in function used to find the maximum value among a set of values or elements.
Question 83: What is the LEFT function in a SAS program?
Answer:
The LEFT function in a SAS program is used to remove trailing spaces from a character string. It’s commonly used to clean up character variables by eliminating any extra spaces that might be present at the end of the text. This function is particularly useful when dealing with data where spaces could affect comparisons, concatenations, or other operations.
Question 84: What is VAR Statement in a SAS program.
Answer:
A VAR statement is commonly used in PROCs (procedures) to specify the variables you want to analyze or manipulate. The VAR statement allows you to select specific variables from your dataset for processing or analysis.
Question 85: What is the function of the LABEL statement?
Answer:
The LABEL statement in SAS is used to assign labels or descriptive names to variables, which are then used in various SAS outputs, reports, and analyses. Labels provide more meaningful and informative descriptions of variables compared to the variable names themselves, making it easier for users to understand the data without having to refer back to a data dictionary or code documentation.
Question 86: What is SAS Graph?
Answer:
SAS Graph is a component of the SAS is widely used for data analysis, statistical modeling, and visualization. SAS Graph specifically focuses on creating high-quality, data-driven graphical visualizations. It provides a range of tools and features to generate various types of graphs and charts, enabling users to effectively communicate and present their data findings.
Question 87: What is Linear Regression?
Answer:
Linear regression refers to a statistical approach that predicts the value of a variable Y based on a value of another variable X, wherein X is known as a predictor variable, whereas Y is known as the criteria variable.
Question 88: What is Libname Statement?
Answer:
The LIBNAME statement is used to assign a library reference to a specific physical location or folder on your computer or network. It’s a crucial statement for data management and accessing external data sources within your SAS programs.
Question 89: What is the use of Proc summary?
Answer:
Proc Summary is a procedure in the SAS (Statistical Analysis System) software used for summarizing and analyzing data. It’s commonly used for generating descriptive statistics for numerical variables within a dataset.
Question 90: What is the use of Proc glm?
Answer:
PROC GLM is a procedure in SAS (Statistical Analysis System), which stands for “General Linear Models.” It’s used for performing various types of linear modeling and analysis of variance (ANOVA) techniques. This procedure allows users to analyze data using linear regression, analysis of variance, analysis of covariance, multivariate analysis of variance, and more.
Question 91: What is the function of CATX syntax?
Answer:
The term “CATX syntax” is used to concatenate (join) the values of multiple variables or strings with a specified separator.
Question 92: How can you include or exclude specific variables in a data set?
Answer:
You can utilize DROP and KEEP statements along with dataset options to include or exclude specific variables in a data set.
Question 93: How to do table lookup in SAS?
Answer:
Following are the ways to do “table lookup” in SAS:
- Match Merging
- Format Tables
- PROC SQL
- Direct Access
- Arrays
Question 94: How can you create permanent SAS data set?
Answer:
In order to create a permanent SAS data set, you need to follow these steps:
- Assign an engine and library.
- Create the data and ensure to assign both the library and data set name to make the data set permanent.
Question 95: Name the default statistics that PROC MEANS produce?
Answer:
The PROC MEANS produce the following default statistics:
- STD DEV
- MEAN
- MIN
- MAX
- N
Question 96: What is the key difference Match Merge and One to One Merge?
Answer:
A one-to-one merge is appropriate when both datasets in the merge operation are organized by ID, and every entry in one dataset corresponds to a relevant entry in the other dataset. If there is a lack of correspondence between observations, then a matching merge becomes more suitable.
Question 97: What is the Infile statement in a SAS program?
Answer:
The Infile statement is used for reading in the external data file.
Question 98: Why PROC Transpose is used?
Answer:
PROC Transpose is used for converting rows into columns in the dataset.
Question 99: What is the use of PROC Reg?
Answer:
The PROC Reg is used to perform regression analysis in the data set.
Question 100: What is the use of PROC Print in a data set?
Answer:
The PROC Print in SAS Program is used to print the content of a data set.
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