Quiz 4: Fundamental of Data Visualization - Evaluation and Reflection 1. From the given image of a pie chart, which of the following statements accurately describes its effectiveness as a visualization A. It's effective because it includes all smartphone manufacturers B. It's ineffective due to the large number of slices C. It's effective because pie charts are the best for market share data D. It's ineffective because pie charts should never be used for market share 2. What would be a better alternative to the pie chart in the image for representing the market share data of smartphone manufacturers? A. Scatter plot B. Line graph C. Bar chart D. Histogram 3. Based on the pie chart image, what issue exists with the labels? A. They are too big B. They are too small and cluttered C. There are no labels D. They are in the wrong language 4. Considering the scatter plot image, which design choice strengthens the effectiveness of this visualization? A. The use of different color coding for different product categories B. The use of a scatter plot to represent a single variable C. The absence of labels for the axes D. The lack of a title for the scatter plot 5. Based on the scatter plot image, what can be concluded about the relationship between Product List Views and Product Checkouts? A. There is no relationship between them B. There is a positive relationship between them Quiz 5: Fundamental of Data Visualization - Application to Real-World Scenarios 6. You have a large dataset of a telecom company's customer churn data in Looker Data Studio. Which visualization would be most suitable to display the distribution of churn over time? A. Scatter plot B. Line graph C. Pie chart D. Bar chart 7. Looker Data Studio allows you to connect directly to various databases. In the context of data privacy, what's the benefit of this capability? A. Reduces data redundancy B. Minimizes the risk of data breaches C. Improves data loading speed D. Simplifies data transformation 8. You've created a visualization showing the correlation between a customer's age and their total purchases. The correlation seems weak. How could this information be useful? A. It suggests that customer age is not a significant factor in total purchases. B. It indicates that older customers make more purchases. C. It shows that the visualization is incorrect. D. It means that there's a strong correlation between age and purchases. 9. When preparing to present a series of visualizations to stakeholders, what is the best practice for ordering your presentation? A. Show the least important visualization first to build suspense. B. Arrange the visualizations randomly to keep the presentation dynamic. C. Present the visualizations in the order in which they were created. D. Start with the big picture and progressively drill down into the specifics. 10. In Looker Data Studio, you notice an outlier in your data visualization. What is the appropriate next step? A. Ignore the outlier as it doesn't fit the pattern. B. Investigate the outlier to understand its cause. C. Remove the outlier from the dataset. D. Change the visualization type to hide the outlier.