Your question is Owning a Messy Data Issue. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Tell me about a time you were given a dirty or incomplete dataset that affected an important analysis or reporting deliverable. How did you diagnose the issues, clean or validate the data, communicate trade-offs, and make sure the final output was reliable enough to use?