Applied economist having fun in the world of tech and data science. Chief economist and research director at Glassdoor (glassdoor.com/research).

Linear regression is the most important statistical tool most people ever learn. However, the way it’s usually taught makes it hard to see the essence of what regression is really doing.

Here’s a method for estimating Pi that basically requires a dartboard, faith in the relative frequency interpretation of probability, and plenty of time.

Step one, build yourself a dartboard that looks like this:

Each year, some fraction of Seattle’s population moves to Portland. And some fraction of Portland’s population moves back to Seattle. If this keeps up year after year, what happens in the long run? Will the populations reach a…

One of the scariest moments of grad school for me was getting up in front of a classroom to teach for the first time.

Let’s do a thought experiment. Say the world’s proven oil reserves are 400 million barrels. And say world oil consumption is 20 million barrels a year, growing at 5 percent annually.

With another “Pi Day” behind us, I thought I’d share a fun method for estimating pi that basically requires a hardwood floor, a bag of sewing needles and plenty of time.