I run http://seedtable.com which similarly provides analytics built on-top of Crunchbase and what I found from looking at the financial numbers is that Crunchbase just isn't reliable enough to do analytics on.
Rounds are frequently incorrect (typos in numbers, orders of magnitude wrong, foreign currencies treated as if they were USD, etc.) or missing.
It's definitely better than nothing, but should be treated with caution.
This is just the first step; I've got more planned to make this better.
But I also believe that by publicizing this it will encourage accelerators to have their startups monitor/clean up their data on Crunchbase. (And I personally think that's good for the startup ecosystem.)
Rounds are frequently incorrect (typos in numbers, orders of magnitude wrong, foreign currencies treated as if they were USD, etc.) or missing.
It's definitely better than nothing, but should be treated with caution.