Years ago, I was asked by a colleague to give a presentation to a group of my peers on statistical reliability and validity. It was at the end of a “retreat” day that was also a Friday – at 3:00 PM. Nobody wants to give or be in a presentation at 3:00 PM on a Friday for any reason. Yet it was the situation I was in.
In an attempt to make the presentation more interesting and engaging, I decided to put in two “live data” demonstrations. In one, participants would be assessing face ...