Week 1 – Data types and structures

data types and structures coursera quiz answers

Weekly Challenge 1

1. A data analyst at a book publisher is working on an urgent report for executives. They are using only historical data. What is the most likely reason for choosing to analyze only historical data?

  • The project has a very short time frame
  • The data is unknown
  • There is plenty of time to research historical data
  • The data is constantly changing

2. Which of the following are examples of discrete data? Select all that apply.

  • Box office returns
  • Movie running time
  • Movie budget
  • Number of actors in movie

3. Which of the following questions collects nominal qualitative data?

  • Is this your first time dining at this restaurant?
  • How many people do you usually dine with?
  • How many times have you dined at this restaurant?
  • On a scale of 1-10, how would you rate your service today?

4. Why is internal data considered more reliable and easier to collect than external data?

  • Internal data circumvents privacy restrictions.
  • Internal data comes from people you know.
  • Internal data has much larger sample sizes.
  • Internal data lives within a company’s own systems.

5. A social media post is an example of structured data.

  • True
  • False


6. Fill in the blank: A Boolean data type can have _____ possible values.

  • three
  • 10
  • two
  • infinite

7. The following is a selection from a spreadsheet:

What kind of data format does it contain?

  • Short
  • Wide
  • Narrow
  • Long

8. A data analyst is working in a spreadsheet application. They use Save As to change the file type from .XLS to .CSV. This is an example of a data transformation.

  • True
  • False

Shuffle Q/A 1

9. A data analyst is working on an urgent traffic study. As a result of the short time frame, which type of data are they most likely to use?

  • Theoretical
  • Historical
  • Personal
  • Unclean

10. Nominal qualitative data has a set order or scale.

  • True
  • False

Devendra Kumar

Project Management Apprentice at Google

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