At the very bottom of this page, there is a table containing some standardized hash function tests. Much more comprehensive than mine.

An investigation into private, non-organized pension savings in the Netherlands. Particularly relevant for the self-employed.

" .. If your churn rate falls significantly below the appropriate range from above, it’s likely that you are being busy, but not effective. Start integrating more opportunities into your schedule to make serious progress on serious projects. If you hit or surpass the desired range, you’re doing fine. ..."

A large collection of articles on investing / stock market trading. Easy to read, often with excel examples.