LOD Expressions provide a way to easily compute aggregations that are not at the level of detail of the visualization. You can then integrate those values within visualizations in arbitrary ways. That may sound abstruse, so this post will illustrate the concept through a series of common questions. Near the end, we will dive into some more advanced analytic examples. The whitepaper on Level of Detail Expressions provides a more general overview. For details on syntax and usage, see Level of Detail Expressions in the Tableau Desktop online help section.Each of the following 15 workbooks contains customized data sources and can be downloaded for further details.