29 - Random Variables

What is a probability model?

Practice

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?

Resources

1. Slide Deck: 29-Random-variables.pdf