PART I. Textbook problems from Freedman, Pisani & Purves:

Chapter 2. Exercise Set A: #1, #13 (pages 20 & 24), Review Exercises: #7, #9 (pages 26-27)

Chapter 3. Exercise Set C: #1, #2 (page 41), Review Exercises: #7, #8 (pages 52-53)

Chapter 4. Review Exercises: #1, #6

(you may handwrite this part, pen or pencil, doesn't matter)

PART II. An Essay question from Professor Lew.

(THIS PART MUST BE TYPED)

Maximum Length: One page, two if you are wordy (don't spend > hour on this OK?)

Spacing: Single or Double space.

Guidance: This one is easy, but required. If you do the textbook problems above and fail to do this one, your homework assignment grade is an automatic minus even if you got the other ones 100% correct. Be as creative or dull as you want to be. Do not get upset by the word "essay" instead, pretend you are writing an e-mail or chatting about what you have learned in the first two lectures of Statistics 10.

Goal: To help you understand statistical concepts by having you to apply them in real-life situations.

The Question: Can you prove that "Powerbeads" Really Work? (see attached handout)

Describe an experiment (see Chapter 1) that you could actually perform on Powerbeads if you had enough time and money. Describe an observational study (Chapter 2) that you could actually perform. In your essay, demonstrate an understanding of the following words:

Confounding/Confounder/Confounding Effect

Treatment

Control

Placebo

Blind

Double-Blind

Bias

Randomization

You don't need any final conclusions (e.g. the experiment worked!), this isn't a real study.

Final Instructions:

WHEN YOU HAND THIS IN, STAPLE PART I and PART II TOGETHER. PUT YOUR NAME ON BOTH PARTS. PUT YOUR TA'S NAME OR THE SECTION YOU ATTEND ON THE FIRST PAGE. THANKS FOR YOUR COOPERATION.