I am a high school senior looking to self-study statistics in his own time. The reason being that I wish to earn an additional credit for my community college. I own the 3rd edition of "Idiot's Guides to Statistics" (not to be confused with "Statistics for Dummies") and got pretty far into it, about 70 pages in or up to chapter on empirical probability until I realized I needed an additional supplement for statistics. I plan on returning to the book once I finish up what I missed on Khan. The goal is to work around my course curriculum required to test out of the class.
The unit I am investing the most time with is the part on analyzing trends. This unit has either relative or absolute two-way tables and I am having trouble reading (and solving) the relative data distributions. Any help you can provide is much appreciated. For reference: https://www.khanacademy.org/math/statistics-probability/analyzing-categorical-data/two-way-tables-for-categorical-data/v/analyzing-trends-categorical-data