Adding new rows
As mentioned in Chapter 3, in the Using Tableau Prep Builder to connect to data section, please make a note of the directory name where you have stored these files: Mobile Phone Plans.xlsx and Bad Measures.xlsx.
In this section, we will explore adding new rows when the level of detail (LOD) of the source data is higher than the level we need to analyze. Looking at the data in the Mobile Phone Plans.xlsx file, as shown in Figure 5.1, we can see data that is easy to understand. We have the customer’s name, the plan they have enrolled in, their monthly plan charge, the number of years of their contract, and the start date of their contract. However, while the data is easy to understand by viewing it, it is not easily consumable for analytical purposes. Imagine the difficulty of answering questions such as, “How many of these customers are still active on January 1, 2023?” or “How much money will we be collecting in the third quarter of 2023...
