Glossary of Data Analysis and Visualization Terms

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Data Visualization

Visual representation of data that's designed for:

  • easy data comparisons
  • to reveal trends and changes over time
  • to discover correlation between different variables in the data
  • to discover patterns in the data

Good data visualization allows you to better understand the drivers behind the data and to make predictions based on that understanding. Common Data Visualizations include Timeline Chart, Category Chart, XY Chart, and Geographical Chart.

Timeline Chart

A timeline chart is a visualization that specializes in temportal data and is good for spotting trends. It shows data over time by putting the date/time in the horizontal axis and other varibles on the vertical axis. A timeline chart offers various data presentations including lines and bars that can be shown on the same scale or different sales or in any combination to highlight changes and allows easy comparison. The main characteristic of a timeline chart is that time dimension is linear on the horizontal axis going from left to right and allowing scroll and zooming to focus on a particular time period.

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