Over the past few years, there has been a subtle but significant shift in the way that data is structured in databases. Whereas yesterday’s databases were typically limited to storing data in rows and ...

This is a graduate-level course on multilevel modeling, a popular statistical approach in social, behavioral, and health sciences research. Multilevel modeling, also known as hierarchical linear ...

Google’s Lizzi Sassman answered a question in a Google SEO Office hours session about whether it’s okay to combine different structured data types. The answer illuminated an important point about how ...