MCQOPTIONS
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MCQOPTIONS
This section includes 5 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 object is masked from package: stats ? |
| A. | filter |
| B. | union |
| C. | set difference |
| D. | get difference |
| Answer» B. union | |
| 2. |
The dplyr package can be installed from CRAN using __________ |
| A. | installall.packages( dplyr ) |
| B. | install.packages( dplyr ) |
| C. | installed.packages( dplyr ) |
| D. | installed.packages( dpl ) |
| Answer» C. installed.packages( dplyr ) | |
| 3. |
The dplyr package can be installed from GitHub using the _______ package. |
| A. | dev |
| B. | devtools |
| C. | devtool |
| D. | devdel |
| Answer» C. devtool | |
| 4. |
The _______ operator is used to connect multiple verb actions together into a pipeline. |
| A. | pipe |
| B. | piper |
| C. | start |
| D. | end |
| Answer» B. piper | |
| 5. |
_________ generate summary statistics of different variables in the data frame, possibly within strata. |
| A. | rename |
| B. | summarize |
| C. | set |
| D. | subset |
| Answer» C. set | |