Union and Intersection of Sets | Probability and Statistics | jensenmath.ca
This video shows how to use Venn Diagrams to represent subsets of a sample space. It also teaches the difference between the intersection and union of sets.
It then shows calculations for probabilities involving the Additive Principle for the Union of 2 sets.
P(A or B) = P(A) +P(B) - P(A and B)