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.
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
