Data Collection and Preprocessing MCQ Questions and Answers

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Each section contains 100 MCQs on Data Collection and Preprocessing .

Which of the following function is used to read data off the webpages?

A) read.web B) read.Lines C) read.Line D) all of the mentioned

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Point out the correct statement.

A) head function work on string B) tail function work on string C) head function work on string but tail function do not D) none of the mentioned

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Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Which of the following function is used for fixing character vectors?

A) tolower B) toUPPER C) toLOWER D) all of the mentioned

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which of the following function programmatically extract parts of XML file?

A) XmlSApply B) XmlApply C) XmlSApplyData D) All of the mentioned

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which of the following signs are used to indicate repetition?

A) # B) * C) – D) All of the mentioned

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

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

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Which of the following function is good for the automatic splitting of names?

A) split B) strsplit C) autsplit D) none of the mentioned

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Which type of data is generated by POS terminal in a busy supermarket each day?

A) Source B) Processed C) Synchronized D) All of the mentioned

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Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Each observation forms a column in tidy data.

A) True B) False

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Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Which of the following is used to extract data from HTML code of websites?

A) Webscraping B) Webdredging C) Webcleaning D) All of the mentioned

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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Data Collection and Preprocessing MCQ Questions and Answers | Data Science MCQs