From the course: Statistics Foundations 2: Probability

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Introduction to multiple events

Introduction to multiple events - Microsoft Excel Tutorial

From the course: Statistics Foundations 2: Probability

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Introduction to multiple events

- Heads or tails, rain or no rain? These are relatively simple probabilities. We calculate the probability. We observe a single event. We get a single outcome. All of it, simple, but life is more complex. Every day we observe and consider multiple events. Consider one game of soccer. A team may win or lose, a player may score a goal, or they might not. Both events have their own individual probability, but is there a relationship between team wins and this player's success in scoring? Here's another example, consider these two statistics. First, one in 10,000 people gets a particular rare disease. Second, the test used to check for the disease is only accurate 98% of the time, but if a person gets a positive result indicating that they have the disease, the 98% accuracy of the test means that their tests could be wrong. How do we find the probability that a positive test was inaccurate? One more, in a class of 20…

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