MCQOPTIONS
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MCQOPTIONS
This section includes 10 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. |
__________ package is used to speed up data frame management code. |
| A. | Data.table |
| B. | Dplyr |
| C. | Table |
| D. | Data.dplyr |
| Answer» C. Table | |
| 2. |
___________ function is used to apply an expression for a given dataset. |
| A. | This() |
| B. | With() |
| C. | Unwith() |
| D. | That() |
| Answer» C. Unwith() | |
| 3. |
__________ is the easiest method for reshaping the data before analysis. |
| A. | Transpose() |
| B. | Structure() |
| C. | Package |
| D. | Function |
| Answer» B. Structure() | |
| 4. |
How many types of data structures does R language have? |
| A. | 2 |
| B. | 3 |
| C. | 5 |
| D. | 8 |
| Answer» B. 3 | |
| 5. |
__________ is the best way for communicating the results of data analysis using the R language. |
| A. | Single document |
| B. | Files |
| C. | Structures |
| D. | Loadings |
| Answer» B. Files | |
| 6. |
Which function in R language is used to find out whether the means of 2 groups are equal to each other or not? |
| A. | f.tests () |
| B. | l.tests () |
| C. | t.tests () |
| D. | not exist |
| Answer» D. not exist | |
| 7. |
CRAN package ecosystem has more than ______ packages. |
| A. | 5000 |
| B. | 4000 |
| C. | 6000 |
| D. | 8000 |
| Answer» D. 8000 | |
| 8. |
How missing values and impossible values are represented in R language? |
| A. | NA |
| B. | NAN |
| C. | NA & NAN |
| D. | Not Exist |
| Answer» D. Not Exist | |
| 9. |
Two vectors M and N are defined as M <- c(3, 2, 4) and N <- c(1, 2). What will be the output of vector Z that is defined as Z <- M*N. |
| A. | Z <- (3, 2, 4) |
| B. | Z <- (3, 6, 4) |
| C. | Z <- (3, 4, 5) |
| D. | Z <- (3, 4, 4) |
| Answer» E. | |
| 10. |
R Commander is used to ___________ in R. |
| A. | Export data |
| B. | Import data |
| C. | Use data |
| D. | Work on data |
| Answer» C. Use data | |