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CEE203042C20LectureExtra209 - Prof Stedinger You are...

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Unformatted text preview: Prof. Stedinger- You are introducing several continuous distributions. 1) Why are there so many ? Different physical conditions give rise to random variables with different properties. We discuss a few distributions that are useful for a wide range of cases. 2) How will we know which to use ? Sometimes engineers don’t and so try different distributions to see which fits the data best; _ we will discuss that near the end of the course. Often the mechanisms that generate the random variable suggest the appropriate model. We already know when a binomial distribution is reasonable. On exams and homework, we often ask you to use a particular distribution to show that you know how. 135% Lecture 9; page 1 ...
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