In Week 1, we will define notations that we are going to use through the course. Also, we introduce the odds ratio that has special importance in interpreting the logit and loglinear models. Then, we study basic inferential methods for categorical data and learn sampling models for contingency tables. The maximum likelihood theory will be mentioned as well. Most of the content follows the text book Categorical Data Analysis 2nd edition by Agresti (2002). The recommended reading book is An Introduction to Categorical Data Analysis 2ndedition by Agresti (2007), which is an Ebook in Library. You can view the book online and print some of chapters.