by Romy Li | Aug 31, 2020 | Romy Li
In my previous blog, I went through some of the fundamental concepts associated with LOD Expressions. To be able to use LODs accurately and efficiently, it is key to understand both the granularity of the data set and what elements affect the level of detail on the...
by Romy Li | Aug 17, 2020 | Romy Li
Why do we need LOD Expressions When working in Tableau, sometimes we need to answer questions that involve aggregating our data to different levels of detail (LOD). For example, maybe you are interested in finding out which state has the highest average sales...
by Romy Li | Aug 1, 2020 | Romy Li
In my last blog, I talked about how to create sets in Tableau and use those sets to help you perform more in-depth analysis. In short, sets are a powerful way to divide members of a certain field into two groups, that is, IN and OUT, which can then be used as a filter...
by Romy Li | Jul 18, 2020 | Romy Li
Intro to Sets Most people will have had some exposure to set theory in high school. In mathematics, a set is just a well-defined collection of distinct objects, whose order or arrangement in the set does not matter. This theory is applied and performed in Tableau...
by Romy Li | Jul 4, 2020 | Romy Li
The Pareto Principle The Pareto Principle, also known as the 80/20 rule or the law of the vital few, basically states that 80% of the consequences come from 20% of the causes. This principle was named after the Italian economist Vilfredo Pareto, who illustrated that...
by Romy Li | Jun 22, 2020 | Romy Li
In week 2 at the Data School, the focus of our training shifted from Alteryx to Tableau. From sets, parameter actions, to Mapbox and viz in tooltip, this week was packed with intermediate and even some advanced Tableau techniques. This isn’t what usually would happen...
