Data Science

Reading from Web and APIs

Question 1
Marks : +2 | -2
Pass Ratio : 50%
Which of the following package is used for reading JSON data?
jsonlite
json
jsondata
all of the mentioned
Explanation:
The jsonlite package is a JSON generator optimized for the web.
Question 2
Marks : +2 | -2
Pass Ratio : 100%
Which of the following package is used for reading excel data?
xlsx
xlsc
read.sheet
all of the mentioned
Explanation:
read.xlsx and read.xlsx functions are part of xlsx package.
Question 3
Marks : +2 | -2
Pass Ratio : 50%
Which of the following can be used to view all the tables in memory?
tables
alltable
table
none of the mentioned
Explanation:
The table function is a very basic, but essential, function to master while performing interactive data analyses.
Question 4
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is an important parameter of read.table function?
file
header
sep
all of the mentioned
Explanation:
More parameters are required for loading the data.
Question 5
Marks : +2 | -2
Pass Ratio : 33%
Which of the following package is used to connect MySQL RDBMS with R?
RMySQL vignette
MySQL vignette
RSQL vignette
None of the mentioned
Explanation:
This package contains meta information and index.
Question 6
Marks : +2 | -2
Pass Ratio : 100%
Which of the following package loads data from SPSS?
read.spss(SPSS)
read.oct(SPSS)
read.xpot(SPSS)
all of the mentioned
Explanation:
SPSS is a comprehensive and flexible statistical analysis and data management solution.
Question 7
Marks : +2 | -2
Pass Ratio : 100%
Point out the correct statement.
XLConnect package has more options for manipulating access files
XLConnect vignette package can also be used for manipulating excel files
write.xlsx write out an excel file with different argument
None of the mentioned
Explanation:
write.xlsx write out an excel file with similar argument.
Question 8
Marks : +2 | -2
Pass Ratio : 33%
Which of the following package is used for reading HTML and XML data?
httr
http
httx
all of the mentioned
Explanation:
httr contains tools for Working with URLs and HTTP.
Question 9
Marks : +2 | -2
Pass Ratio : 100%
Which of the following is used to extract data from HTML code of websites?
Webscraping
Webdredging
Webcleaning
All of the mentioned
Explanation:
Webscraping is a great way to get data.
Question 10
Marks : +2 | -2
Pass Ratio : 100%
Point out the wrong statement.
hdf5 can be used to reading/writing from disc in Python
rhdf5 is an interface for hdf5 format
maximum size of an HDF5 dataset is fixed when it is created
all of the mentioned
Explanation:
hdf5 can be used to reading/writing from disc in R.