Welcome to your interview.
The question is on your right: Data Cleaning in ETL Pipelines. 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.
You're working on a data pipeline and need to prepare raw data before it can be used for analysis or reporting. The focus is on how you clean messy inputs and structure them into something reliable for downstream use.
What methods do you use for data cleaning and preparation?