Welcome to your interview.
The question is on your right: Clean and Analyze Large Data. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
Can you walk me through a time when you worked with a large dataset? How did you clean the data, what tools did you use, and what insights did you uncover?