Data Collection and Preprocessing MCQ Questions and Answers

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Each section contains 100 MCQs on Data Collection and Preprocessing .

Processing data includes subsetting, formatting and merging only.

A) True B) False

Discuss

Answer & Solution

Answer: Option B

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

Point out the correct statement.

A) Nearly 80% of data analysis is spent on wrangling data B) Nearly 20% of data analysis is spent on data dredging C) Nearly 80% of data analysis is spent on the cleaning and preparing data D) None of the mentioned

Discuss

Answer & Solution

Answer: Option C

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

Which of the following function gives information about top level data?

A) head B) tail C) summary D) none 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 is an important parameter of read.table function?

A) file B) header C) sep D) all of the mentioned

Discuss

Answer & Solution

Answer: Option D

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

Data that summarize all observations in a category are called . . . . . . . . data.

A) frequency B) summarized C) raw D) none 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) Primary data is original source of data B) Secondary data is original source of data C) Questions are obtained after data processing steps D) None 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 is an example of raw data?

A) original swath files generated from a sonar system B) initial time-series file of temperature values C) a real-time GPS-encoded navigation file D) all of the mentioned

Discuss

Answer & Solution

Answer: Option D

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

Which of the following package is used for reading GIS data?

A) rdgal B) rgeos C) raster D) all of the mentioned

Discuss

Answer & Solution

Answer: Option D

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

Which of the following package is used for reading excel data?

A) xlsx B) xlsc C) read.sheet D) all of the mentioned

Discuss

Answer & Solution

Answer: Option A

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

Raw data in the real-world is tidy and properly formatted.

A) True B) False

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