I only know a handful of people who genuinely get excited about statistics, but a lot of starting a business relies precisely on that.
If you truly think about it you need to gather data at every stage, and then some more! So, perhaps us entrepreneurs should all get more familiar with our statistical analysis tools.
For this purpose, I found the personal website of David Lane, a Stats and Management Professor at Rice University, with lots of info, tutorials and tools on statistics, with a mix from the quite easy to understand to the straightforward super complicated, but it’s up to you how you use it:
http://davidmlane.com/hyperstat/
Enjoy!