Depends what you’re looking for. If you’re trying to measure a very slight bias then more observations can help. Now imagine that you want to measure that bia

Depends what you’re looking for. If you’re trying to measure a very slight bias then more observations can help. Now imagine that you want to measure that bias across different types of coins and year of minting. Does the bias between coins of the same type vary more than across types? Curse of dimensionality starts to raise its ugly head.