2021: Week 2

Building on from Week 1's challenge, we are going to take your data prep skills on one step further. The next steps we are introducing this week are: Aggregation - changing the level of granularity of your data. The combination of the categorical fields often sets what each row represents so aggregating data changes this. In Tableau Prep this is different from how we aggregate in Tableau Desktop. Calculations - If the value or variable that you need to use isn't in your data set, you will often be able to create it from the other data fields you do have. As per last week, we've attached some help links that will teach you the techniques if you need a few nudges. One of the main challenges with Data Preparation is to think about not just what you want to do but the order you need to do those steps in. The challenge this week will be a good example of that to avoid repeating steps. Here's a post that might help you with your planning . Also, thank you to all those who p