I’m doing some form of data visualization learning for 180 days because I need to #JFDI. See post explaining how and why I’m doing this.
Just as a note to myself – huge improvements on Tableau performance and optimization.
Chapter 3 Ready Reference (Math) Reading – Three Takeways
- Median is useful for ranking outcomes. Mode helps focus on typical outcome. Standard deviation shows how tightly data is dispersed along mean. Highly volatile stock has a high standard deviation.
- A log scale allows you to include values that span orders of magnitude. Using a log scale for timeline on x-axis allows you to show more detail in the short term on chart.
- Y-axis on log scale adjusts the grid so that incremental change at different values of y-axis reflects its relative significance.