I am going to go through the ones that are missing as a recap of those chapters at the beginning on Thursday, and then I'll put up a clicker practice quiz, 5 points, I'll actually keep those scores just to show you the histogram of them later; but it'll be as if it were a little intermediate practice for you to see if you got those couple ideas from those 2 reading chapters, more concepts on different types of bias, an experiment versus an observational study and things like that. 