My past self makes me cringe. I remember a weekend Yinh and I spent in Big Sur before having kids.…
Basic Review Consider a $100 stock. In a simple return world, $150 and $50 are each 50% away. They are…
If you draw a simple return at random from a normal (ie bell curve) distribution and compound it over time,…
Review In 'Well What Did You Expect'? we learned: Mathematical "expectation" is a simple average or arithmetic mean of various…
Here’s a simple coin flip game. It costs $1 to play. Heads: you get paid an additional $1 (ie 100%…
These are not trick questions: Suppose you have an 85 average on the first 4 tests of the semester. There's…
Simple Interest If you pay someone $90 today and they promise to give you $100 in 12 months, you are…
The power of negative correlations is powerful when you see how rebalancing increases your expected compounded return. This isn't intuitive…
Humans are not good bettors. It takes effort both in study and practice to become more proficient. But like anything…
Let’s use this section to learn a math concept. We begin with a question: You drive to the store and…