Discrete random variables and their probability distributions

Mathematical Methods: Units 3 and 4

This video takes a look at what conditional probability is. It looks at what the formula is and where it comes from. Did you know that a tree diagram is a really good way to explain this?! Well ... it is. Having taken a look at how to define it we then have a look at independence.
Sorry ... not Independence Day the movie (although I do have some funnies here!), but testing to see if two events are independent or not. I spend a small amount of time looking at how to prove independence and some worked examples.
There really was so much fun had!

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