Your question is Testing Average Under Uncertainty. 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).
How would you test your average in a dataset to ensure it is reliable and not driven by outliers or sampling issues?
Explain a practical workflow for validating the mean, including outlier sensitivity, alternative summaries, sampling uncertainty, and assumptions. State what evidence would make you trust the average and what you would report if it were not robust.