Data Validation - Nulls to Zeroes .A common issue with real-world datasets is the presence of null values, or blanks, in the data. This can make data analysis challenging and frustrating (as you may know, some statistical techniques will not work at all if there are nulls in the data). Luckily, with Calculations we can easily remove Nulls from our data: .Now open Sales Quotas. In this dataset, we have sales quotas for some, but not all of our countries. .Double-click Country to get a dot everywhere we do business. I want to see how we are doing relative to quotas everywhere. But I have included an issue in the data that needs to be fixed: Right-click somewhere in the map and view data. There are several nulls for Quotas