Say you invest in two things: one that returns double, and another that drops by half. Your gut reaction might be to conclude that you’re … Read More

Equal items are fine with a simple average. Not-so-equal items? Not so fine. A simple average suggest you did pretty well with an 80 on … Read More

That’s where the calculator above comes in. It will run through the numbers for you, taking chunk of prose and turning it into actionable data. … Read More

It’s a spreadsheet you can’t get off balance. It has a portion where it looks good, and a portion where it doesn’t look so good, … Read More

If you live long enough, you will see standardized scores everywhere. On your psychological assessment? Check. Your medical screening? Got it. Report card? You betcha! … Read More

The world becomes binary once you reach some point: You’re in the top ten percent, or you’re not in the top ten percent. While actual … Read More

Now you get your test paper returned to you. The red ink say eighty-six out of one hundred. You feel sense of relief. But then … Read More

Intuition might tell you that hashing one billion records with SHA-256 is fine, there’s just too many different possible outputs for it to go wrong. … Read More

Before you start gathering results, decide how many answers you’ll need to reach. A simple rule of thumb is this: use standard formula for estimating … Read More

It’s easy to enter both sets of numbers in the two columns and see if there is any connection at all. Perhaps it’s the amount … Read More