1.1 Introduction to data visualization

What is data?

I. Computer readable information

II. Information collected about the physical world

III. Programs that process images

IV. Graphs and charts

• II and IV

• I and II

• I, II, and IV

• I, II, III, and IV

Which of the following statements is NOT a benefit of using computers to process data?

• People can use computers to find patterns in data and make predictions
• Computers help people visualize data so that it is easy to extract useful information
• Websites can spy on people and gather large amounts of personal data without the user knowing
• Computers are able to easily process, manipulate, and display large amounts of data in a short amount of time

Which of the following statements is true about data visualizations?

• Visualizing data has only been possible since computers have become widespread.
• Visualizations take many forms, from tables to charts to images.
• There is always one exact visualization that should be used to show a particular aspect of a dataset.
• The only way to extract information from data is by using a visualization.

Which of the following statements are true about using visualizations to display a dataset?

I. Visualizations are visually appealing, but don’t help the viewer understand relationships that exist in the data

II. Visualizations like graphs, charts, or visualizations with pictures are useful for conveying information, while tables just filled with text are not useful.

III. Patterns that exist in the data can be found more easily by using a visualization

• I and II

• II and III

• I, II, and III

• III only

Which of the following are ways that data is collected about you:

I - Websites store data that tracks how you use the website

II - Websites store cookies in your browser so that the next time you visit the website things like your profile login and recent activity are saved

III - Some apps store geolocation information from your phone to track your location

IV - Transaction data is stored by credit card companies when you purchase things with a credit card

• I only

• I, II, III, and IV

• I, II, and IV

• II only

Data visualization is also an element of the broader _____________

• deliver presentation architecture
• data presentation architecture
• dataset presentation architecture
• data process architecture

Which method shows hierarchical data in a nested format?

• Treemaps
• Scatter plots
• Population pyramids
• Area charts

Which of the following is false?

• data visualization include the ability to absorb information quickly
• Data visualization is another form of visual art
• Data visualization decrease the insights and take solwer decisions
• None Of the Mentioned

Common use cases for data visualization include?

• Politics
• Sales and marketing
• Healthcare
• All of the mentioned

Which of the following plots are often used for checking randomness in time series?

• Autocausation
• Autorank
• Autocorrelation
• None Of the Mentioned