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Data Collection and Pre-Processing Quiz

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

What is the main objective of data collection?

a)

To store data in databases

b)

To visualize data patterns

c)

To create complex algorithms

d)

To gather information-rich and reliable data

2.

Which of the following is a primary data collection method?

a)

Library records

b)

Government archives

c)

Historical data

d)

Internet surveys

3.

What does data cleaning involve?

a)

Removing duplicates and fixing incorrect data

b)

Collecting data from various sources

c)

Analyzing data trends

d)

Storing data in cloud services

4.

Which method is used for data integration?

a)

Conducting interviews

b)

Merging multiple data frames

c)

Creating pivot tables

d)

Performing statistical analysis

5.

What is the purpose of data transformation?

a)

To collect data from external sources

b)

To convert data into a machine learning digestible format

c)

To store data securely

d)

To visualize data using graphs

6.

Which of the following describes skewness?

a)

A type of data integration

b)

A method for data cleaning

c)

A measure of symmetry in distribution

d)

A statistical analysis technique

7.

What does a box plot summarize?

a)

Data using median and quartiles

b)

Data using mean and standard deviation

c)

Data using frequency distribution

d)

Data using correlation coefficients

8.

Which of the following is a disadvantage of primary data collection?

a)

It is easily accessible

b)

It is cost-effective

c)

It is time-consuming

d)

It provides outdated information

9.

What is the main challenge of secondary data collection?

a)

It is time-consuming

b)

It is always cost-effective

c)

It requires extensive interviews

d)

Data can be outdated or inaccurate

10.

What does a heat map represent?

a)

A type of data integration

b)

A method for data cleaning

c)

A statistical summary of data

d)

A two-dimensional representation of information with colors