Getting Data(Engineering > Computer Science And Engineering > Data Science ) Questions and Answers
Question 1. Which of the following transforms can be performed with data value ?
log2
cos
log10
All of the Mentioned
Explanation:-
Answer: Option D. -> All of the Mentioned
Many common transform can be applied to the data with R.
Question 2. Which of the following process involves structuring datasets to facilitate analysis ?
Data tidying
Data mining
Data booting
All of the Mentioned
Explanation:-
Answer: Option A. -> Data tidying
The principles of tidy data provide a standard way to organize data values within a dataset.
Question 3. Which of the following request can be issued from httr package ?
GET
PUT
DELETE
All of the mentioned
Explanation:-
Answer: Option D. -> All of the mentioned
Data Science Multiple Choice Questions & Answers : Data Science Getting Data
Question 4. Which of the following signs are used to indicate repetition ?
#
*
"“
All of the mentioned
Explanation:-
Answer: Option B. -> *
* and + are metacharacters for repetition of data.
Question 5. Which of the following can be used to view all the tables in memory ?
tables
alltable
table
None of the Mentioned
Explanation:-
Answer: Option A. -> tables
The table function is a very basic, but essential, function to master while performing interactive data analyses.
Question 6. Which of the following package is used for reading excel data ?
xlsx
xlsc
read.sheet
All of the Mentioned
Explanation:-
Answer: Option A. -> xlsx
read.xlsx and read.xlsx functions are part of xlsx package.
Question 7. Which of the following package is used for reading HTML and XML data ?
httr
http
httx
All of the Mentioned
Explanation:-
Answer: Option A. -> httr
httr contain tools for Working with URLs and HTTP.
Question 8. Which of the following data is put into a formula to produce commonly accepted results ?
Raw
Processed
Synchronized
All of the Mentioned
Explanation:-
Answer: Option B. -> Processed
Raw data came from direct measurements.
Question 9. Which of the following is used for specifying character class with metacharacter ?
[]
{}
/+
All of the Mentioned
Explanation:-
Answer: Option A. -> []
You can list set of characters to accept a given point in the match.
Question 10. Which of the following is another name for raw data ?
destination data
eggy data
secondary
Machine Learning
Explanation:-
Answer: Option B. -> eggy data
Although raw data has the potential to become "information, extraction, organization, and sometimes analysis and formatting for presentation are required for that to occur.