MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your R Programming knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is not an object of R? |
| A. | calls |
| B. | expressions |
| C. | strings |
| D. | names |
| Answer» D. names | |
| 2. |
Dataframes can be converted into a matrix by calling the following function data ______ |
| A. | matr() |
| B. | matrix() |
| C. | matrixf() |
| D. | matrixfunc() |
| Answer» C. matrixf() | |
| 3. |
Functionality of R is divided into a number of __________ |
| A. | Functions |
| B. | Domains |
| C. | Packages |
| D. | Files |
| Answer» B. Domains | |
| 4. |
In ________ Insightful purchased the S language from Lucent for $2 million. |
| A. | 2002 |
| B. | 2003 |
| C. | 2004 |
| D. | 2005 |
| Answer» D. 2005 | |
| 5. |
Advanced programmers can write ______ code to manipulate R objects. |
| A. | Python |
| B. | Java |
| C. | C |
| D. | Java Script |
| Answer» D. Java Script | |
| 6. |
If the code is stored in the external file, which of the following function is used to call them to a working directory? |
| A. | exec() |
| B. | source() |
| C. | execute() |
| D. | sourcefile() |
| Answer» C. execute() | |
| 7. |
R files has an extension ______ |
| A. | .R |
| B. | .S |
| C. | .Rp |
| D. | .c |
| Answer» B. .S | |
| 8. |
A single element of a character vector is referred as ________ |
| A. | Character string |
| B. | String |
| C. | Data strings |
| D. | Raw data |
| Answer» B. String | |