I was reading an article about logistic regression and I got confused by one of the pictures:
First animated gif from Uni of Toronto. What is depicted there? What is y-axis and x-axis (from 0 to 1)? How is it related to logistic regression?
UPD: this post is not of the best quality - but I don't ask about the post, but about the picture. I've seen this picture multiple times and once I've seen a senior statistician laughing at this picture on twitter - however, no explanation followed why it is funny.
UPD1: here is another example of this plot: