Weekend HW!

I'm posting pretty early today (Friday). Scroll down to yesterday's post if you're looking for stuff about today's test.

This weekend, please complete the chapter 6 reading questions provided in class (or below).

• Use your textbook (read it!) to answer each of the questions provided!
• Your answers must be THOROUGH, but do not necessarily have to be in complete sentences
• The more you read and understand, the more of a head start you'll have on our notes next week!
• If you simply answer the questions, you will know a little bit about what's happening next week...
• If you actually read the entire chapter, you will have a better initial understanding, which will make next week easier!

I'm looking forward to grading these tests and seeing where we're at! 

Next week is (almost) ALL MATH! I can't wait! You know I'm a huge math nerd.  :) Be ready! We learn new stuff next week, then it's time for another round of (2) tests!

If you lost yours or were absent, here's your homework!

Reading Questions: Chapter 6

Use your textbook to answer each of the questions below:

1.       What does a z-score, or standardized score, measure? (p. 103)

2.       What is the formula to calculate a z-score? Provide the formula in symbols, but also define each symbol in words. (For example, don’t just put “y.” Also, tell me what “y” represents (in words)!) (p. 103, example on p. 107)

3.       What is shifting data? (p. 105)

4.       How does shifting data affect measures of position (max, min, mean, median, etc.) and spread (range, IQR, standard deviation)?  (p. 105)

5.       What does it mean to rescale data? How does rescaling affect measures of position and spread? (p. 105-106)

6.       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).

7.       To apply a Normal model what shape must our distribution be? Describe the shape in words, and provide a picture. (p. 108-109)

8.       The standard Normal model has a mean of _________ and a standard deviation of _________.  (p. 108)

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

10.   If a distribution is normal, what shape does a Normal probability plot show? (p. 118)

11.   Finding Normal percentiles. Look at the “Working with Normal Models” Step-by-Step example on page 113. Follow the example shown, and summarize the process. Your job is to list a step-by-step process for how this problem is solved. (p. 113)

12.   What is a statistic? (p. 122)