1.3 - Data Sources

Question 1

Why is it important to understand data sources before analyzing?

Answer 1

Knowing where data comes from helps ensure it’s reliable, relevant, and suitable for answering your questions.

Question 2

What questions should you ask about a data source?

Answer 2

Who collected it, how was it collected, when was it collected, and is it accurate and unbiased?

Question 3

Name the two main types of data sources.

Answer 3

Primary (collected firsthand) and Secondary (collected by others).

Question 4

______ data is collected directly by you for a specific purpose.

Answer 4

Primary

Question 5

______ data is collected by someone else for another purpose.

Answer 5

Secondary

Question 6

Which of these is an example of primary data?
A) Census dataset
B) Your own customer survey
C) Published research paper
D) Online statistics portal

Answer 6

B) Your own customer survey

Question 7

Which of these is an example of secondary data?
A) Sales data you record daily
B) Interview you conduct
C) Government economic reports
D) Lab measurements you take yourself

Answer 7

C) Government economic reports

Question 8

What is open data?

Answer 8

Data that is freely available for anyone to access, use, and share.

Question 9

Why should you consider reliability and credibility of a data source?

Answer 9

To ensure the data is accurate, unbiased, and trustworthy for analysis.

Question 10

Data collected from sensors, surveys, or experiments is typically considered ______ data.

Answer 10

Primary

Question 11

Data found in books, reports, or online repositories is typically considered ______ data.

Answer 11

Secondary

Question 12

Name one risk of using secondary data.

Answer 12

Examples: outdated, incomplete, biased, or collected for a different purpose.