Next Week's HW and Grades in!

Midterm exam grades and quarter grades are in! 

• Please double check your stamp grades! If the total is not correct, send me a Remind or email by Monday (carofano.fm@easthartford.org)
• Your exam grade correlates to your predicted score on the AP Exam!
• A = projected 5, B = projected 4, C = projected 3, D = projected 2, F = projected 1
• Further, the numeric score gives you an idea of how close you were to earning the next highest score
• For instance, if you got an 88, you are projected to earn a 4 but were close to getting a 5!
• We will discuss this all more moving forward

Next week (Tues, Wed, Thurs) you will have to teach yourself chapter 13 for homework!

• Each night you will be given certain questions to answer based on reading your textbook (ch 13)
• You may also be given a textbook problem or two to do along with the questions you answer!
• So, the more you get done this weekend, the easier your week will be!
• If you'd like to get a head start--and maybe do all of this work this weekend, so you have a lot less to worry about next week--all of the questions you'll have to answer are uploaded under the "Classroom Powerpoints and Assignments" link on the right!
• You can either print out a copy of these questions using the word document from the classroom powerpoints and assignments link...
• Or you can record all of this information in your notes...
• Or you can stop by and grab a hard copy of these if you're in school tomorrow or Monday...
• Or you can wait until Tuesday and just do the assigned homework each night!

Or, you can find the questions for next week here:

Read the chapter (13) and complete each of the questions below. Remember, this is for your benefit; the more thorough your notes/responses are, the better prepared we will be! This will be counted as a classwork grade!

·         These questions only serve as an outline to help guide your reading. Of course you can take additional notes to strengthen your understanding!

1.       There are two types of observational studies—retrospective and prospective studies.

a.       What is a retrospective observational study?

b.      What is a prospective observational study?

c.       What is matching in an observational study? (page 305).

2.       In an experiment where does the random assignment occur?

3.       What is/are the factor(s), levels, and treatment(s) in an experiment? Define each.

4.       What is the response variable?

5.       What distinguishes an experiment from the other methods of data collection? In other words, how is an experiment different than a simulation, sample survey, and observational study? (This is in your notes from our first day on “methods of data collection….”)

6.       Describe/comment on each of the four principles of experimental design:

a.       Control:

b.      Randomize:

c.       Replicate:

d.      Block:

7.       What sampling method is equivalent to blocking in an experiment?

8.       *Be sure to read through the step-by-step examples in the chapter; these are the examples we would have discussed for our notes in class!

9.       Complete each of the “just checking” questions on page 301 (parts a-e). Record your answers/work below.

10.   Explain the meaning of “statistically significant.”

11.   What is a control treatment/control group?

12.   What does it mean for an experiment to be single-blind or double-blind?

13.   What is a placebo? Why do we use placebos?

14.   Complete the “just checking” questions on the bottom of page 305 (parts a-c). Record your answers/work below.

15.   What does it mean for two variables to be confounded?

16.   In your own words summarize the procedure for the tomato/fertilizer experiment diagrammed the bottom of  page 299.

17.   Now look at the blocked version of this tomato/fertilizer experiment diagrammed on page 305. In your own words, how is this blocked version of the experiment different from the original version (on page 299)?

18.   Finally, examine the diagram of the 2-factor version of the tomato/fertilizer experiment on page 306. What are the two factors being manipulated here? For this experiment, describe/identify each of the following:

a.       Factors (2):

b.      Levels (for each factor):   

c.       Treatment groups (6):

19.   Note the vocabulary list on page 310-312. This list shows the words that you are responsible to know! 

So here's the plan when we're back...

• Tuesday = discuss exams, AP stuff, and bias!
• Wednesday = bias and sampling wrap up
• Thursday = experimental design
• Friday = experimental design!