Data Collection Quiz 1

What are the recruitment sites in Vietnam?

• Ask Google ...

• http://www.vietnamworks.com/

• http://careerbuilder.vn/

For each job page, after searching with a certain keyword, how do I get the recruitment information?

• On each recruitment, copy-paste information to take into file

• Write a program that automatically parse HTML, get the information to retrieve and write down the file

What are the key steps in the Data Science Process?

• Data collection
• Data visualization
• Data discovery and preprocessing
• Final decision making

Which of the following are valid methods to collect data?

• Use pre-packaged data (CSV, Excel)
• Conducting surveys
• Use API provided by the website
• Copying data from website without permission

Which tools are important for data collection and analysis in Python?

• Excel
• Jupyter Notebook
• Python libraries (requests, pandas, etc.)
• Tableau

What should you check before scraping data from a website?

• The site’s “robots.txt” file
• The site's HTML structure
• The JavaScript files used on the site
• The site's privacy policy

Why is “garbage in, garbage out” important when collecting data?

• Incorrect data leads to incorrect results
• Data collected from APIs are always correct
• Unreliable data can affect the quality of analysis
• Data collected from websites should be trusted

Which are valid Python libraries for scraping data from websites?

• requests-html
• Selenium
• pandas
• BeautifulSoup

Which of the following are parts of an HTML tag?

• Tag name
• Attributes
• CSS selectors
• Closing tag

What is an advantage of using APIs for data collection over scraping HTML?

• APIs are officially provided for external use
• APIs are faster to parse than HTML
• APIs don’t require knowledge of HTML structure
• APIs provide access to all the website's data