MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
A programmer builds a _________ to avoid repeating the same task or reduce complexity. |
| A. | Function |
| B. | Package |
| C. | Code |
| D. | Console |
| Answer» B. Package | |
| 2. |
The cumulative frequency distribution of a categorical variable can be checked using the ________ function in R language. |
| A. | Sum |
| B. | Cumsum |
| C. | Lumpsum |
| D. | Resum |
| Answer» C. Lumpsum | |
| 3. |
Which function calculates the count of each category of a categorical variable? |
| A. | Table |
| B. | Intact |
| C. | Tables |
| D. | Retabs |
| Answer» B. Intact | |
| 4. |
Which function basically finds the intersection between two different sets of data? |
| A. | Converge |
| B. | Merge |
| C. | Delegate |
| D. | Swap |
| Answer» C. Delegate | |
| 5. |
_________ package provides basic functionalities in R environment like arithmetic calculations, input/output. |
| A. | R base |
| B. | R boost |
| C. | R serve |
| D. | R comm |
| Answer» B. R boost | |
| 6. |
Write a function to extract the first name in the string “Mrs. Jake Luther”? |
| A. | Substring |
| B. | Substr |
| C. | Substi |
| D. | Return |
| Answer» C. Substi | |
| 7. |
________ function generates “n” normal random numbers based on the mean and standard deviation arguments passed to the function. |
| A. | rnorm |
| B. | vnorm |
| C. | knorm |
| D. | lnorm |
| Answer» B. vnorm | |
| 8. |
What will be the output of runif()? |
| A. | Random number |
| B. | Numbers |
| C. | Character |
| D. | Path generation |
| Answer» B. Numbers | |
| 9. |
Write the syntax to set the path of the current working directory in R environment? |
| A. | Setwd(“dipath”) |
| B. | Setwd(dir_path) |
| C. | Setwd(“dir_path”) |
| D. | Set(“dir_path”) |
| Answer» D. Set(“dir_path”) | |
| 10. |
Which function is used to create a histogram for visualisation in R programming language? |
| A. | Library |
| B. | Hist |
| C. | Data |
| D. | Refer |
| Answer» C. Data | |
| 11. |
Which function helps you perform sorting in R language? |
| A. | Order |
| B. | Inorder |
| C. | Simple |
| D. | Library |
| Answer» B. Inorder | |
| 12. |
The current user defined objects like lists, vectors, etc. is referred to as __________ in the R language. |
| A. | Work names |
| B. | Work space |
| C. | Environment |
| D. | Console |
| Answer» B. Work space | |
| 13. |
A ________________ in R programming language can also contain numeric and alphabets along with special characters like dot and underline. |
| A. | Variable name |
| B. | Number |
| C. | Integer |
| D. | Character |
| Answer» B. Number | |
| 14. |
___________ function gives an error message if the desired package cannot be loaded. |
| A. | Dplyr |
| B. | Require |
| C. | Library |
| D. | Sample |
| Answer» D. Sample | |
| 15. |
________ function is usually used inside another function and throws a warning whenever a particular package is not found. |
| A. | Dplyr |
| B. | Require |
| C. | Coin |
| D. | Sample |
| Answer» C. Coin | |