Presumably the sample size is the aggregated number of companies these VCs invested in. Sure, the numbers are averaged together but I find it interesting that

Presumably the sample size is the aggregated number of companies these VCs invested in. Sure, the numbers are averaged together but I find it interesting that the variance is relatively low. I think these numbers are still pretty useful for entrepreneurs. If nothing else, they give you an idea of what to put on the projections you send to VCs. :)