Back to work...

Glad you're back!

Tomorrow I will announce the day of our test--either Friday or Monday. Please vote! (top left of the page).

We'll do some more practice stuff tomorrow (Thursday), and then learn some new/additional regression stuff Friday (if we do not have our test).

Tonight, please complete the following:

Period E:     page 213: 1, 7, 9

Period F,H: page 213: 1, 7 and finish our multiple choice (provided in class)

Enjoy!

Back to school tomorrow!

You know I'm going to check your homework after that much time away from school...

The end of the first marking period has been moved to next Wednesday. Therefore, we will have one final test toward the first quarter grade. Yay!

Stay safe!

Good morning!

Hope you're all ready for some serious wind and rain!

We will not have a test Wednesday as a result of today/tomorrow being cancelled. Hopefully we all keep our power and are back at school Weds! When we return we'll practice chapter 8 some more (for about 2 days) and then we will have a test, most likely the first grade of our third quarter.

I look forward to seeing you all soon! Enjoy being stormed-in!

(If you do lose power, this might be the perfect opportunity to read some chapter 8/do some studying, or maybe even read chapter 9 to get ahead...just sayin...)

It's the weekend!

Can you believe we're almost done with October? Halloween is only a few days away....

Please complete the following this weekend:

Page 190: 14, 23, 31ef, 33, 47

On Monday and Tuesday we'll practice some linear regression (and do some AP problems); then, we will enjoy our.....

**Test on chapter 7 and 8 on Wednesday!** (After school test review on Monday).

This will be our last grade of the quarter. Yay!

Thursday homework....

I hope you're all enjoying your extended afternoon!

Tonight, please complete the worksheet provided in class (ps...this is not a 26 point quiz, just a homework grade...). Remember to skip E!

Some more info....

• Crossword puzzles (for extra credit on the test) are due tomorrow!
• We will have a TEST next week (WEDS or THURS)!

The answer to number 2a is.......y(hat) = 56 + 2.4x

I can't believe I forgot to post yesterday...

Broke my streak of posts. I'm sorry!

Tonight, enjoy some Algebra....writing linear equations, interpreting slope, y-intercept.....yay!

Page 189:
1, 15a, 21, 27, 49

Quiz tomorrow--5 min! "Is a linear model appropriate?" and "Find the equation of the LSRL using your calculator." After grading/stamping your stamp problems from today, here are a few pointers....

• Remember you're looking for random scatter in the RESIDUAL plot, not the scatter plot
• When you explain your reasoning, make sure you say there is/isn't a pattern in the RESIDUAL plot. Be specific.
• Draw the residual plot!
• Don't forget the other two conditions!
• Look at the scatter plot (L1 vs. L2 most likely) for outliers.
• Don't just say "the variables are quantitative." You have to tell me what the variables are!

Also, I started working on #1 with some people after school....it's really just a ton of Algebra. Maybe this will help?

Monnnnnnday HW

It's so nice out--stats homework outside!

Tonight, please complete the following in your textbook (sorry to be picky about which parts, just saving you some stress...)

Page 189: 3, 7, 31a-d, 35acdg, 39ab

If you were absent recently please be sure to make up the quiz from Friday.   Crossword puzzles are due on Friday!

Weekend Homework!

What's better for a rainy day than some AP Stat free-reponse problems?

This weekend please complete the following problems (provided in class):

2011 #1 (problem about z-scores--weight lifting and running)

1998 #2 (another histogram from a scatter plot!)

These will be checked as homework, not collected and graded. We WILL NOT go over them in class--it is your resonsibility to look up/check your answers online! If you follow the link below, choose the "scoring guidelines" for the appropriate year to find the answer key and grading rubric. (Or, just google it...)

http://apcentral.collegeboard.com/apc/members/exam/exam_information/8357.html

Then, of course, if you have questions we can talk about them.

Back to chapter 8 Monday!

Thursday HW

Chapter 7 quiz tomorrow! You'll only have about 12 minutes, so make sure you know what you're doing! Scroll down to yesterday's post for a breakdown of the quiz. After the quiz we'll begin chapter 8 and start to explore residual plots.

Tonight, please complete the "Chapter 7 Quiz C" worksheet provided in class. (This will not be graded as a quiz, just as homework).

See you all tomorrow!

Wednesday!

Tonight, please complete the following (from your textbook):

page 162: 13, 21, 23, 25, 29, 31

Enjoy!

*The crossword puzzles (extra credit on the test grade) are due by next Friday, 10/26*

Check out the new poll question--it made my brain melt.

Tuesday Oct 16.....

Thought you might enjoy this artwork that was left for me after our discussion of # of cats and your chances of being struck by lightning...(I think that's me?)

Tonight, please complete the following:

Page 160: 1, 3, 5, 6, 7, 9, 11, 12, 15 (find correlation on your calculator)
*If you'll be attending our AP Seminar tomorrow please don't do this! Save it for the seminar! (We can also go over any mistakes on your Unit 1 test and answer any old questions you may have...)*

See you manana!

Monday HW

New unit! Yay!

Tonight, please complete the following (period E--I added 2 questions for you to do!)

1. Chapter 7 reading questions (using our notes and your textbook)
2. Page 160: 1,3

The chapter 7 questions are listed below (in case you forgot):
1. What are explanatory and response variables? Explain in your own words.

2. Sketch a scatterplot with a…
     a. Strong negative association
     b. weak positive association
     c. correlation = 1
3. What does correlation measure? Be specific.
4. What types of variable(s) are shown on a scatterplot—categorical or quantitative?
5. What are the three conditions we must check before investigating correlations?
6. In describing an association, what are three features we must address?
7. What is the goal of re-expressing a scatterplot?
8. What happens to a scatterplot if we standardize all x and y values?

Take Home Test!

Hopefully you're all feeling confident after today's exam. I'm looking forward to examining the grade data and evaluating our performance for the first unit!

This weekend you have you last "Unit 1" assignment--to complete the 15 multiple choice take home test provided in class. If you lost it or need one (Brandon!) I've uploaded it under our classroom resources. Look in the "Assignments" section (scroll down) to find "Unit 1 Take Home MC Test."

On Monday we'll begin our next unit, bivariate data. If you're feeling ambitious and would like to get ahead, take a look at chapter 7. I'm pretty pumped to get into it.

Enjoy your weekend! See you Monday!

Tomorrow's the big day....

STUDY. Then, STUDY MORE. Then, study some Chem for your quiz, too.

Tomorrow will be a nice opportunity for you to test you're learning to this point in AP Stats. I'm looking forward to seeing the results,and of course wish you all the best of luck (but you won't need luck if you study).

*If you go to the classroom resources/powerpoints and scroll to the bottom you can find a list of topics to study for tomorrow's test (Unit One Exam Topics)*

Here are a few more tidbits about tomorrow's exam:

• You do not have to create any graphical displays by hand or on your calculator. All questions based on graphical analysis come with the graphs provided.
• The Normal model question is similar to the "Storms" problem we did in class (remember, Minor, Kinda, and Super storms?)
• And don't forget invnorm() problems. You need to know how to find the cutoff for the "top 20%", for instance.
• Study your boxplot quiz we had--tomorrow you'll have to compare two boxplots
• Make sure you know how to determine outliers!
• Make sure you know the relationship between the mean and median dependent upon shape (in class we folded a paper into three columns and took some notes on this topic--study this!)
• Independence--know what it is! The test question is just like #20 from our recent homework (p. 131)

See you manana! (pretend there's a tilde over that first n).

Rest-of-Week Homework

Over the next two days your job is to prepare for Friday's test!

To do so, please complete (for Friday):

page 131: 1,3,13,20,25,27,29,38

I will be after school to help you both today and tomorrow.

On Friday you'll have a take-home multiple choice test.

And it's all new stuff on Monday! Yay!

Tuesday HW

Time to start preparing--UNIT 1 TEST FRIDAY! There will be an in-class portion, as well as (potentially) a take home portion for the weekend.

Tonight, please begin reviewing--complete:

Page 131: 1,3,20, 25

**The handout I provided in class simply has these problems (from the textbook) printed onto one page--so if you lost it, just use your book!**

VOCAB TEST TOMORROW!

First off, just skimmed through the AP Stat facebook group, and I'm loving it. It seems like it can be a great resource, everybody should be in there. I love seeing people answering and asking questions, etc. Fantasticness. #davidw.samantham.pauld.jamell.xavierc.kevinh.jacobc.cindyt.

As for your vocab test...here are some more specifics for tomorrow.

1. This is a test of responsibility as much as it is statistical content. It is of the utmost importance that you study hard and start off with a successful first test. If you have any questions throughout the day (regarding definitions), email me at fred.carofano@gmail.com. I'll be out all day so I won't have access to my school email, but these will find me via smartphone.

2. There are 21 words to match. Four words have two definitions. These four words are: outlier, standard deviation, interquartile range, and Normal model.

3. Then, you have to name at least 3 displays for categorical data, 4 for quantitative data, and draw three distributions with a given shape.

4. Make sure you know about shifting and rescaling!

5. Brush up on what a contingency table is!

6. Study the difference between a parameter and a statistic.

7. To identify skewed vs. symmetric distributions, you must know how the mean and median relate!

• Skewed Left: mean < median (because the mean is pulled toward the unusual, low values in the tail)
• Skewed Right: mean > median (the mean, in this case, is pulled higher, toward the tail)
• Symmetric: mean = median (well, they'll be close to equal. Here, the high and low numbers "balance out," and the mean is not impacted in either direction)

8. Make sure you know the relationship between standard deviation and variance.

(3 Day) Weekend HW:

STUDY FOR TUESDAY'S VOCAB TEST! Check back for some more vocab test information later this weekend....

Periods E and F:
Please complete page 127: 35, 41, 43

Period H:
Please complete the multiple choice questions provided in class for Tuesday. You may also complete the homework problems above for some homework extra credit.

Thursday HW

Please complete the IQ worksheet provided in class. Remember, this will be collected and graded (12 points in your AP problem category!).

If you lost the questions, here you go!

1. IQ can be modeled by the following: N(100,15). Use this model to answer the questions below.


a. Sketch a Normal distribution for IQ scores, and label the 68/95/99.7 rule on your picture.
b. Interpret the meaning of this rule, in context, in complete sentences.
c. Approximately what percent of people have IQ’s above 85?
d. Approximately what percent of people have IQ’s between 70 and 145?
e. Approximately what percent of people have IQ’s below 130?
f. Some consider those with IQ’s of 140 or above to be considered “genius.” Approximately what percent of people have an IQ considered to be “genius?”
g. Former President George W. Bush has an approximate IQ of 125. What percent of people would be considered less intelligent?
h. On the other hand, former President Ronald Reagan only had an IQ of approximately 105. What percent of people would be considered more intelligent?
i. Those with IQ’s between 115 and 124 are considered “above average,” or likely of university-student ability. Find the percent of category who fall into this specific interval.
j. What IQ cuts off the top 20% of IQ’s?
k. What IQ marks the 75th percentile?
l. What IQ score cuts off the most intelligent 5% of individuals?


Period H:
I (unfortunately) will not see you tomorrow...enjoy the pep rally!

*Your IQ problems are STILL DUE TOMORROW! You have to drop them off before the end of the day!
*You will also have to complete the AP multiple choice questions provided for Tuesday; we'll be working through these in class (periods E,F) on Friday. You're welcome to stop by if you have a free period!
*I also have a lecture hall study during period G if you want to come for some helP!

Wednesday HW

Tonight, please complete the "Normal Distribution Worksheet" provided in class. (Two contexts, one regarding nails, one regarding Ixxians).

And don't forget....VOCAB TEST IS TUESDAY!

Tuesday HW

YOUR VOCABULARY TEST WILL BE ON TUESDAY, 10/9.

Tonight, please complete:
page 125: 19, 27, 33, 34, 45

And check out the AP Stats facebook group!

Monnnnnnndayyyyyy

Back to work!

Tonight, please complete the following problems from your textbook...

**Notice that I added one question!**

Monday HW:page 123: 1, 5, 7, 9, 11, 23