Que.Which of the following is an important parameter of read.table function?
|
| a. file |
| b. header |
| c. sep |
| d. all of the mentioned |
Que.Which of the following will set the character that represents missing value?
|
| a. na.quote |
| b. na.strings |
| c. nrows |
| d. all of the mentioned |
Que.Point out the wrong statement.
|
| a. data.table inherits from data.frame |
| b. data.table is written in Java |
| c. data.table is faster at subsetting and updating data |
| d. none of the mentioned |
data.table is written in Java
Que.Which of the following package is used for reading excel data?
|
| a. xlsx |
| b. xlsc |
| c. read.sheet |
| d. all of the mentioned |
Que.Which of the following can be used to view all the tables in memory?
|
| a. tables |
| b. alltable |
| c. table |
| d. none of the mentioned |
Que.Which of the following function programmatically extract parts of XML file?
|
| a. XmlSApply |
| b. XmlApply |
| c. XmlSApplyData |
| d. All of the mentioned |
Que.Which of the following package is used for reading JSON data?
|
| a. jsonlite |
| b. json |
| c. jsondata |
| d. all of the mentioned |
Que.Extracting XML is the basis for most web scraping.
|
| a. True |
| b. False |
| c. May be True or False |
| d. Can’t say |
Que.Which of the following package is used to connect MySQL RDBMS with R?
|
| a. RMySQL vignette |
| b. MySQL vignette |
| c. RSQL vignette |
| d. None of the mentioned |
Que.Point out the correct statement.
|
| a. HDF5 is a hierarchical format |
| b. HDF5 does not support range of different data types |
| c. HDF5 is used for storing small datasets |
| d. None of the mentioned |
HDF5 is a hierarchical format