The lecture Contingency Tables by David Spade, PhD is from the course Statistics Part 1. It contains the following chapters:
What does a contingency table do?
What statement below is correct about marginal distributions?
What is correct about conditional distribution?
Which of the following answers is(are) CORRECT?
What is Simpson’s Paradox?
Contingency table is also known as what term?
What is true about the marginal frequency of the category corresponding to the row?
Relative frequencies should add up to which of the following?
Percentages we come up with for conditional distributions must add up to which of the following?
Which of the following is NOT a caution to avoid problems that arise with contingency tables?
5 Stars 

2 
4 Stars 

0 
3 Stars 

0 
2 Stars 

0 
1 Star 

0 
It is better than that I watched in other web site. I really recommend this lecture.
Clear explanations that makes understanding of concepts easy. Relevant examples too