Well....
It's up to you. There will be questions on it, but they are multiple choice. As I recall(2 years ago now) there was 2 or 3 questions on the stats, so assuming a pass mark of 70 %, if you get all the other questions correct and the stats ones wrong you would probably be ok. However, as I'm sure someone will point out, if you get through you will need to know them anyway...
Best of luck.
