3.2.2.Explore data credibility - quanganh2001/Google-Data-Analytics-Professional-Certificate-Coursera GitHub Wiki

Test your knowledge on data credibility

Question 1

Which of the following are usually good data sources? Select all that apply.

  • Vetted public datasets
  • Governmental agency data
  • Academic papers
  • Social media sites

Explain: Vetted public datasets, academic papers, and governmental agency data are usually good data sources.

Question 2

To determine if a data source is cited, you should ask which of the following questions? Select all that apply.

  • Is the data relevant to the problem I'm trying to solve?
  • Who created this dataset?
  • Is this dataset from a credible organization?
  • Has this dataset been properly cleaned?

Explain: “Is this dataset from a credible organization?” and “Who created this dataset?” are questions that can help you determine if a data source is cited.

Question 3

A data analyst is analyzing sales data for the newest version of a product. They use third-party data about an older version of the product. For what reasons is this inappropriate for their analysis? Select all that apply.

  • The data is not orginal
  • The data is biased
  • The data is not accurate
  • The data is not current

Explain: Third-party data about an older version of the product is inappropriate because it is not original or current.