New developers can easily become overwhelmed or even confused by the vast number of terms and definitions associated with their profession. In particular, one of the biggest challenges that software ...

Imagine you're a researcher studying how sleep affects mood. To explore the connection, you would look at two key "variables": sleep (how much someone gets) and mood (how happy or irritable they feel) ...

This post follows up on Part 1 by examining the many ways that you can test the value of variables – e.g., whether they equal particular strings like “yes” or “no”, if they have a numeric value, if ...

Data will tell you the right answer. If you can’t find data somewhere, you should run a test, collect the data, and let it tell you what’s right. A/B testing is one of the core marketing arts a ...