Weeeelllll actuallly... 10/100 is same percentage as 1/10, so groups would have same mean. Your point is fair though, but it would be more appropriate to make

Weeeelllll actuallly... 10/100 is same percentage as 1/10, so groups would have same mean. Your point is fair though, but it would be more appropriate to make the example 0/10 in the small group when there was a ~1/10 chance of that happening (based on larger groups distribution) so its not super significant.