Que.R has how many atomic classes of objects?
|
| a. 1 |
| b. 2 |
| c. 3 |
| d. 5 |
Que.Point out the correct statement?
|
| a. Empty vectors can be created with the vector() function |
| b. A sequence is represented as a vector but can contain objects of different classes |
| c. “raw” objects are commonly used directly in data analysis |
| d. The value NaN represents undefined value |
Empty vectors can be created with the vector() function
Que.Numbers in R are generally treated as _______ precision real numbers.
|
| a. single |
| b. double |
| c. real |
| d. imaginary |
Que.If you explicitly want an integer, you need to specify the _____ suffix.
|
| a. D |
| b. R |
| c. L |
| d. K |
Que.Point out the correct statement?
|
| a. The value NaN represents undefined value |
| b. Number Inf represents infinity in R |
| c. NaN can also be thought of as a missing value |
| d. “raw” objects are commonly used directly in data analysis |
Number Inf represents infinity in R
Que.Attributes of an object (if any) can be accessed using the ______ function.
|
| a. objects() |
| b. attrib() |
| c. attributes() |
| d. obj() |
Que.R objects can have attributes, which are like ________ for the object.
|
| a. metadata |
| b. features |
| c. expression |
| d. dimensions |
Que.Which of the following can be considered as object attribute?
|
| a. dimensions |
| b. class |
| c. length |
| d. all of the mentioned |
Que.What will be the output of the following R code?> x <- vector("numeric", length = 10)
> x
|
| a. 10 |
| b. 0 0 0 0 0 0 0 0 0 0 |
| c. 01 |
| d. 00120 |
Que.The ________ function can be used to create vectors of objects by concatenating things together.
|
| a. cp() |
| b. c() |
| c. concat() |
| d. con() |