Microsoft Excel 2019 Data Analysis and Business Modeling, 6th Edition

Chapter 72 The normal random variable and Z-scores

Questions answered in this chapter:

• What are the properties of the normal random variable?

• How do I use Excel to find the probabilities for the normal random variable?

• Can I use Excel to find the percentiles for normal random variables?

• Why is the normal random variable appropriate in many real-world situations?

• What are Z-scores?

Answers to this chapter’s questions

What are the properties of the normal random variable?

In Chapter 69, “An introduction to random variables,” you learned that continuous random variables can be used to model quantities such as the following:

• The price of Microsoft stock one year from now

• The market share for a new product

• The market size for a new product

• The ...