When's Day

Tonight, please complete the chapter 6 reading questions (provided in class). Make sure your answers are neat, organized, and clear!

If you forgot/lost/don't have the handout, each of the (9) questions are provided below:

Use your textbook to answer each of the questions (from chapter 6!) below:


1.) What does a z-score, or standardized score, measure?

2.) What is shifting data? And how does it affect measures of position (max, min, mean, median, etc.) and spread (range, IQR, standard deviation)?

3.) What does it mean to rescale data? How does rescaling affect measures of position and spread?

4.) Calculate the z-score for a student who scored 91 on an exam, if the class had an average of 87 and a standard deviation of 1.8. (Use the step-by-step example on page 107 as a guide).

5.) To apply a Normal model what shape must our distribution be? Describe the shape in words, and provide a picture.

6.) The standard Normal model has a mean of _________ and a standard deviation of _________.

7.) What does the Empirical, or 68/95/99.7 rule tell us? Explain in words (p. 109!).

8.) If a distribution is normal, what shape does a Normal probability plot show?
9.) What is a statistic?

And remember, quiz Friday!