Rapleaf's API provides income given an email address, when available. I ran the list of emails from the git commit log across that API, which only gives me dat

Rapleaf's API provides income given an email address, when available. I ran the list of emails from the git commit log across that API, which only gives me data points for the users who have income data available. Is there really any way to correct for the fact that not all the data is going to be available? It certainly doesn't exclude a sampling bias, which I did mention in the post, possibly not aggressively enough.