For questions about interacting with Google Data Studio. Questions about how to do data analysis are off-topic.

Data Studio (currently in beta testing) is a chart and report generation tool. Primarily for generating reports for Google Analytics data, it can also accept data from other sources, including Google Sheets.

Questions at Web Applications on Data Studio should be about interacting with the web application. Questions asking for help with doing data analysis will be off-topic. For those types of questions, try Cross Validated or possibly Data Science.