21. A dashboard is designed to share insights about the housing market in a city. What type of data visualization would be most effective at demonstrating how the city’s annual home sales have risen over time?

  • Area chart
  • Line chart
  • Scatter plot
  • Pie chart

22. What type of visualizations enable the data in a presentation to automatically update and change over time?

  • Dynamic
  • Discrete
  • Customized
  • Static

23. Why is it more effective to label a data visualization instead of using a legend? Select all that apply.

  • Labels make the data visualization more accessible because they don’t rely on the ability to interpret color.
  • Labels help keep people’s attention on relevant data by redirecting their focus away from outliers.
  • Labels can be placed near the data, whereas legends are typically positioned away from the data.
  • Labels allow for text explanations to be placed directly on the visualization.

24. A data visualization reveals two variables in the data that rise and fall at the same time. When variables are related in this way, what is likely happening?

  • Causation
  • Correlation
  • Divergence
  • Polarity

25. Which of the following are appropriate uses for filters in data visualization tools? Select all that apply.

  • Hiding outliers that do not support the hypothesis
  • Limiting the number of rows or columns in view
  • Highlighting individual data points
  • Providing data to different users based on their particular needs

Weekly challenge 1

26. Fill in the blank: To gain insights, businesses rely on _____ to acquire, organize, and interpret the data that informs internal projects and processes.

  • information technology professionals
  • clients
  • data professionals
  • stakeholders

27. What process enables users to express how to perform a task by using data instead of explicit instructions?

  • Visualization
  • Statistics
  • Data science
  • Machine learning

28. Before creating predictive models to identify trends and inform best practices, a company must evaluate its data using what type of measurement?

  • Attributes
  • Metrics
  • SMART methodology
  • Best practices

Shuffle Q/A 3

29. What are some key advantages of the Python programming language? Select all that apply.

  • It is very flexible.
  • It is one of the easiest programming languages to write.
  • It has an enormous online community and other helpful resources.
  • It was created within the data community.

30. Fill in the blank: Jupyter Notebook is a web-based computing platform that enables data professionals to _____ in real-time.

  • run code
  • iterate on a business process
  • visualize data
  • query databases

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