Name _______________________________________ Date __________ Block _______
Chapter 6: The Standard Deviation as a Ruler and the Normal Model
Read Chapter 6 (pgs 102-122) Complete the following reading guide using
only your textbook to answer the questions.
10 pts
1. When we standardize data to get a z-score, what are the two things we do?
1)
2)
2. What does a z-score measure?
3. How does adding or subtracting a constant amount affect measures of location?
4. How does adding or subtracting a constant amount affect measures of spread?
5. How does multiplying or dividing by a constant amount affect measures of location? Spread?
6. How does standardizing affect the distribution of a variable in terms of shape, center, and
spread?
7. In what way does a z-score given an indication of how unusual a value is?
8. What does the notation N(, ) mean?
9. What is a Normal model? What are the parameters of the Standard Normal Model?
10. Draw and label a representation of the Empirical Rule:
11. What is the “normalcdf( “ function? How do you use it?
12. What is the “invNorm( “ function? How do you use it?
13. How does a Normal Probability Plot help you decide if a distribution is roughly Normal?
Write a brief summary of Chapter 6 here: