Tableau

Tableau enables you to:

• observe and understand data to make decisions

• connect to data in databases, spreadsheets or CSV files

• create and share interactive dashboards with data

Primary chart types

• Column (vertical bar): a column chart allows you to display and compare multiple categories of data by their values.

• Horizontal bar: a bar chart functions similarly to a column chart, but is flipped horizontally.

• Line: a line chart showcases trends in your data over a period of time.

• Pie: a pie chart is an easy way to visualize what proportion of the whole each data point represents.

• Area: area charts allow you to track changes in value across multiple categories of data.

• Scatter: scatter plots are typically used to display trends in numeric data.

• Combo: combo charts use multiple visual markers like columns and lines to showcase different aspects of the data in one visualization.

Data Type in Tableau

• #: Numeric data

• Abc: String data

• Globe: Geographic data

• Calendar: Date data

• Calendar with a clock: Date and time data

Diverging color palette

A diverging color palette in Tableau displays characteristics of values using:

• Intensity for the magnitude
• Hue for the range

What makes an effective visualization?

• Five-second rule: A data visualization should be clear, effective, and convincing enough to be absorbed in five seconds or less.

• Color contrast: Graphs and charts should use a diverging color palette to show contrast between elements.

• Conventions and expectations: Visuals and their organization should align with audience expectations and cultural conventions.

• Minimal labels: Titles, axes, and annotations should use as few labels as it takes to make sense.