Your question is Diagnosing Unexpected Dataset Results. 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).
You are reviewing a dataset that produced results you did not expect. The first pass looks inconsistent with prior runs, and you need to figure out whether the issue is real, random, or caused by the data itself.
If given a dataset with unexpected results, how would you analyze it?