«junk bond king» wrote a thesis that two percentage points were enough compensation for the likely higher default rate of a junk bond fund over a corporate bond fund. (money.stackexchange.com)
Another reason why payday loan companies charge hefty fees is the comparatively high default rate for payday loans. (investing-tools.com)
I ask because at first glance (haven't looked at the report in detail) the graphs are consistent with a simple «higher tuition means higher default rates» argument. (creditslips.org)