Although more esoteric than many of the standard chart types, the scatter plot can provide very meaningful, and enlightening,
visualization of two related numeric measures. There are, generally speaking, two different analyses that scatter plots
help consider: comparison/correlation of the two measures, and existence of outliers. In most cases, one or more related
dimensions are also used in a scatter plot.

For example, the scatter plot may be ideal in looking for correlation between number of web ads placed and the number of hits
to your website with further analysis on dimension data, such as where the web ad was placed, day the ad ran, or known
demographics of the person who visited your website. Or your candidate may want to see if the number of outgoing phone
calls asking for campaign contributions can be correlated to the number of contributors or the amount of contributions. Certain
outliers, such as a few contributors who contributed large amounts, will stand out on a scatter plot, allowing for targeted analysis.

Dimensions (or other measures that help broaden scatter plot analysis) can be added to additional areas of the Marks card.
For example, to simply add additional blue open circles for every member of a desired dimension, drag the dimension to Detail.
While you can change the shape from the default open circle to another shape by choosing a different mark type from the Marks
card drop-down, you may prefer to have different shapes appear for different members of a desired dimension. Simply drag that
dimension to Shape. You can have different colors appear for different dimension members or measure ranges by dragging the
desired dimension or measure to Color. Marks can be sized by dragging a dimension or measure to Size. The scatter plot below
shows an example of the effects of these different Marks card options.

                          Tableau Online Training, Tableau Training, Tableau Onsite Training, Tableau Consulting

Tableau Scatter Plot Best Practice

Effective scatter plots include either a small enough number of marks following a general trend to draw quick conclusions about
the individual measures or a large concentration of marks (perhaps due to disaggregation) to draw general conclusions.

The Scatter Plot is just one of Tableau's many chart types.
What kinds of reports does your organization's decision-makers rely on?
Imagine the data storytelling potential with Tableau.
Learn how to create your own Tableau Scatter Plots in Tableau: The Official Guide (versions 8 and 9).
Download Tableau Desktop today.

Interested in Ablaze Group Tableau Training? Send us an email!

Ablaze Group resources and services: