MCQOPTIONS
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MCQOPTIONS
This section includes 11 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. |
Using the ________ vector, we create a species factor and bind it to the columns of iris.df. |
| A. | snames |
| B. | rnames |
| C. | jnames |
| D. | fnames |
| Answer» B. rnames | |
| 2. |
Which dimension corresponds to the explanatory variables collected for each species? |
| A. | First |
| B. | Second |
| C. | Third |
| D. | Fifth |
| Answer» C. Third | |
| 3. |
Which of the following is a 3-dimensional dataset? |
| A. | Eris |
| B. | Iris |
| C. | Toris |
| D. | Iris |
| Answer» C. Toris | |
| 4. |
To bind a row onto an already existing matrix, the ______ function can be used. |
| A. | Rbind |
| B. | Sbnd |
| C. | Gbind |
| D. | Sbind |
| Answer» B. Sbnd | |
| 5. |
Computation with vectors is achieved using an element-by-element operation for avoiding _________ |
| A. | Loops |
| B. | Functions |
| C. | Packages |
| D. | Interfaces |
| Answer» B. Functions | |
| 6. |
Which function is used to enter in data at the terminal? |
| A. | Scanned |
| B. | Scnn |
| C. | Scan |
| D. | Sccn |
| Answer» D. Sccn | |
| 7. |
The ________ function creates a regular sequence of values to form a vector. |
| A. | sequel |
| B. | Rep |
| C. | seq |
| D. | Grep |
| Answer» D. Grep | |
| 8. |
Which function replicates elements of vectors? |
| A. | C |
| B. | Rep |
| C. | Crep |
| D. | Grep |
| Answer» C. Crep | |
| 9. |
What is the simplest way of creating the vector? |
| A. | C function |
| B. | Create |
| C. | Destroy |
| D. | Invalid |
| Answer» B. Create | |
| 10. |
A __________ is a set of elements appearing in rows and columns where the elements are of the same mode whether they are logical, numeric (integer or double), complex or character. |
| A. | Vector |
| B. | Matrix |
| C. | Lists |
| D. | Data frames |
| Answer» C. Lists | |
| 11. |
The four most frequently used types of data objects in R are vectors, matrices, data frames and ________ |
| A. | Function |
| B. | Lists |
| C. | Packages |
| D. | Interfaces |
| Answer» C. Packages | |