Category: Statistical graphics

Adventures in Replication: p values and Illusions of Incompatibility

Here’s an idea I run into a lot in peer reviews of replication studies: If the original study found p < .05 but the replication found p > .05, then the results are incompatible and additional research is needed to

Posted in ITNS, NHST, Replication, Statistical graphics, The New Statistics

Pictures of uncertainty: Dancing with Pierre in Paris

A while back I wrote a post about Pierre Dragicevic, an HCI researcher in Paris who for years has been working to persuade researchers in his field to adopt better statistical methods. I wrote about his wonderful talk that presents

Posted in ITNS, Open Science, Replication, Statistical graphics, Teaching

What the datasaurus tells us: Data pictures are cool

In various places in ITNS, especially Chapter 11 (Correlation) we discuss how important it is to make good pictures of data, to reveal what’s really going on. Calculating a few summary statistics–or even CIs–often just doesn’t do the job. Many

Posted in Statistical graphics

Today’s mystery word: Apophenia

I (Geoff) learned a new word today: Apophenia ┬áIt was in an article about investing and the stock-market. Apparently, there’s a whole industry devoted to identifying patterns in the price movements of stocks, then using these to guide when to

Posted in ITNS, Statistical graphics

A chilling picture

In ITNS you may notice dot points like: Focus on effect sizes Be mindful of variability Find a revealing picture Here’s an illustration of the potency of those 3 bullet points. It’s from a recent article in The Conversation. It

Posted in Statistical graphics, Uncategorized