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. |
__________are Data frames which contain lists of homogeneous data in a tabular format. |
| A. | Matrix |
| B. | Vector |
| C. | Lists |
| D. | Array |
| Answer» D. Array | |
| 2. |
In R using the function, ________ one can check the data type of vector. |
| A. | Typeof() |
| B. | Castof() |
| C. | Function() |
| D. | C() |
| Answer» B. Castof() | |
| 3. |
Which is the basic data structure of R containing the same type of data? |
| A. | Functions |
| B. | Array |
| C. | Vector |
| D. | Lists |
| Answer» D. Lists | |
| 4. |
Decimal values are referred as ________ data types in R. |
| A. | Numeric |
| B. | Character |
| C. | Integer |
| D. | Lists |
| Answer» B. Character | |
| 5. |
Data frames can have additional attributes such as __________ |
| A. | Rowname() |
| B. | Rownames() |
| C. | R.names() |
| D. | D.names() |
| Answer» C. R.names() | |
| 6. |
A data frame is a special type of list where every element of the list has ______ length. |
| A. | Same |
| B. | Different |
| C. | May be different |
| D. | May be same |
| Answer» B. Different | |
| 7. |
Lists can be coerced with which function? |
| A. | As.lists |
| B. | Has.lists |
| C. | In.lists |
| D. | Co.lists |
| Answer» B. Has.lists | |
| 8. |
vectors can be one of two types namely atomic vectors and _______ |
| A. | Matrix |
| B. | Vector |
| C. | Lists |
| D. | Array |
| Answer» D. Array | |
| 9. |
By what function we can create data frames? |
| A. | Data.frames() |
| B. | Data.sets () |
| C. | Function () |
| D. | C () |
| Answer» B. Data.sets () | |
| 10. |
Factors are created using the _______ function. |
| A. | C() |
| B. | Function() |
| C. | Array() |
| D. | Lists() |
| Answer» C. Array() | |
| 11. |
Factors are the r-objects which are created using a _________ |
| A. | Vector |
| B. | Matrix |
| C. | Lists |
| D. | Array |
| Answer» B. Matrix | |
| 12. |
Which function takes a dim attribute which creates the required number of dimensions? |
| A. | Vector |
| B. | Array |
| C. | Matrix |
| D. | Lists |
| Answer» C. Matrix | |
| 13. |
A _________ is a two-dimensional rectangular data set. |
| A. | Vector |
| B. | Lists |
| C. | Matrix |
| D. | Functions |
| Answer» D. Functions | |
| 14. |
A __________ is an R-object which can contain many different types of elements inside it. |
| A. | Vector |
| B. | Lists |
| C. | Matrix |
| D. | Functions |
| Answer» C. Matrix | |
| 15. |
Which function is used to combine the elements into a vector? |
| A. | C() |
| B. | D() |
| C. | E() |
| D. | F() |
| Answer» B. D() | |