ts is not defined in any course & quiz is asked about ts data type in lab1.2. it is defined in Lecture about Geospatial data. which will come after the lab
I would recommend you to go through the Lecture: Exploring Datasets in Compass again. In this video, the instructor has talked about how to explore your data in compass.
In the Lab 1.2: Determine the Value Type, Part 1, you are expected to do some exploratory analysis on your own using the techniques shown in the above video lecture.
If you still have any query, please feel free to get back to us.
Curriculum Support Engineer