21. Fill in the blank: Pre-aggregation involves _____ while data is in the database, before it is transferred to the visualization tool.

  • making calculations
  • reporting
  • analyzing
  • setting permissions

22. A business intelligence professional creates a data visualization that uses only color to specify the data points. What should they do to make the visualization more accessible?

  • Include labels.
  • Remove outliers.
  • Combine data from multiple sources.
  • Add more data points.

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