
Why PMs Should Study Statistics: An Interactive Essay
20190602
Marty Cagan – seasoned product manager and author of a book and blog that makes practically every recommended reading list for new product managers – says that there are two academic courses that “every product manager should take”: finance and computer science. In this interactive essay, I suggest we add another course to this list: statistics. A strong understanding of statistics facilitates three key responsibilities of product managment: understanding analytics, implementing cooprorate change, and making accurate forecasts.…

How Startups Can Do Better Cohort Analyses
20181229
If you’ve ever looked at analytics for software products, you’ve probably run across a graph that looks like this: Graphs like this one depict cohort analyses.1 This particular graph is from Google Analytics. Apple also has one for app analytics. So does Fabric.2 Cohort analyses can be very useful. For example, Eric Reis, in The Lean Startup, recounts how cohort analysis helped his startup realize that their efforts at improving their product weren’t working:…