MCQOPTIONS
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MCQOPTIONS
This section includes 9 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. |
What is the function to set row names for a data frame? |
| A. | row.names() |
| B. | colnames() |
| C. | col.names() |
| D. | column name cannot be set for a data frame |
| Answer» B. colnames() | |
| 2. |
How many atomic vector types does R have? |
| A. | 5 |
| B. | 6 |
| C. | 8 |
| D. | 10 |
| Answer» C. 8 | |
| 3. |
What are the typeof(x) and mode(x) in the following R syntax? |
| A. | Numeric, Integer |
| B. | Integer, Numeric |
| C. | Integer, Integer |
| D. | Numeric, NumericView Answer |
| Answer» C. Integer, Integer | |
| 4. |
What is the mode of b in the following R code? |
| A. | Numeric |
| B. | Character |
| C. | Integer |
| D. | LogicalView Answer |
| Answer» B. Character | |
| 5. |
What is the length of b? |
| A. | 4 |
| B. | 5 |
| C. | 6 |
| D. | 0View Answer |
| Answer» D. 0View Answer | |
| 6. |
What is the mode of ‘a’ in the following R code? |
| A. | Numeric |
| B. | Character |
| C. | Integer |
| D. | LogicalView Answer |
| Answer» C. Integer | |
| 7. |
R language has superficial similarity with _________ |
| A. | C |
| B. | Python |
| C. | MATLAB |
| D. | SAS |
| Answer» B. Python | |
| 8. |
R language is a dialect of which of the following languages? |
| A. | S |
| B. | C |
| C. | MATLAB |
| D. | SAS |
| Answer» B. C | |
| 9. |
What is output of getOption(“defaultPackages”) in R studio? |
| A. | Installs a new package |
| B. | Shows default packages in R |
| C. | Error |
| D. | Nothing will print |
| Answer» C. Error | |