29 - Random Variables

What is a probability model?

Homework: Chapter 16 # 1,5,21,25,29, Read chapter 16

Vocabulary: random variable, discrete random variable, continuous random variable, expected value, probability model, variance

Study Questions:

  1. What is a random variable?
  2. What is the meaning of expected value and how is it affected by addition of a constant? multiplication by a constant?
  3. How is standard deviation affected by the addition of a constant? multiplication by a constant?
  4. How do we add or subtract random variables?
  5. What is a probability model and how would you create one for a discrete random variable?
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