Communicating Data with Tableau by Ben Jones

Author:Ben Jones
Language: eng
Format: epub, pdf
ISBN: 9781449372026
Publisher: O’Reilly Media, Inc.
Published: 2014-02-28T16:00:00+00:00

The Connected Scatterplot

We haven’t yet strayed from the rule of thumb that time should be encoded on the x-axis increasing from left to right. An innovative way to encode time is to make a scatterplot of the two variables in question and connect dots that represent successive years. Let’s create one to see what it would look like.

To start with, we can create a standard scatterplot as we did in Chapter 8 with pitchers per team on the x-axis (or Column shelf) and SO, or average strikeouts per game, on the y-axis (or Rows shelf). If we do so and then add a trend line as before, we will find that the variation in pitchers per team explains 71% of the variation in strikeouts (from the R-Squared value). The basic scatterplot with trend line is shown in Figure 9-9.

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