However, looking back at the 10 years I've worked since then, it is obvious that I am making far more money specifically due to the things I learned in finance, statistics, economics, etc. 

Interesting statistics

We have also found as a company to only work with companies that have everything in house (acquisition, contractors and management) I bolded management because that is crucial, as soon as they farm it out, it can lead to many headaches.

My n=36 units really isn't "statistically valid".  

But, it is statistically incorrect to say that 8% of real estate transactions do not involve agents.

I find it humorous to read comments from those that choose to ignore documented statistics to support a weak argument in the defence of something they are primarily emotional about.Statistically pits have a documented history of attacks.

I was sent a packet that included statistics on the markets they operate in, local economic stats, demographic analysis, stats on their vacancy rates, and some background on the MI.

As a coach, when I was deciding whether to send or hold a runner rounding third base, I was aggressive. if the defense had to make a perfect play to throw the runner out, I would make them make the perfect play, as I was a finance major and I knew statistically I had a better chance of them screwing something up and my guy scoring than I did them making the perfect play.

I am sure if there were statistics of people who became successful after reading that book or that course is probably low. 

Unless, again, it's extreme, and it sounds like you have enough proof that it was.Tenants like this live in denial, yet they are very bold when making threats.