a) head function work on string b) tail function work on string c) head function work on string ...
View QuestionWhich of the following function gives information about top level data?
a) head b) tail c) summary d) none of the mentioned Answer: a Explanation: The function head ...
View QuestionExtracting XML is the basis for most web scraping.
a) True b) False Answer: a Explanation: XML is particularly used in web applications.
View QuestionWhich of the following package is used for reading JSON data?
a) jsonlite b) json c) jsondata d) all of the mentioned Answer: a Explanation: The jsonlite package ...
View QuestionWhich of the following function programmatically extract parts of XML file?
a) XmlSApply b) XmlApply c) XmlSApplyData d) All of the mentioned Answer: a Explanation: xmlSApply are simple ...
View QuestionWhich of the following can be used to view all the tables in memory?
a) tables b) alltable c) table d) none of the mentioned Answer: a Explanation: The table function ...
View QuestionWhich of the following package is used for reading excel data?
a) xlsx b) xlsc c) read.sheet d) all of the mentioned Answer: a Explanation: read.xlsx and read.xlsx ...
View QuestionPoint 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 ...
View QuestionWhich of the following will set the character that represents missing value?
a) na.quote b) na.strings c) nrows d) all of the mentioned Answer: b Explanation: na.strings takes a ...
View QuestionWhich of the following is an important parameter of read.table function?
a) file b) header c) sep d) all of the mentioned Answer: d Explanation: More parameters ...
View Question