Thursday HW and Weekend HW!

How are you feeling about today's test? Hopefully super confident! I look forward to grading them and being proud of you for doing awesome!

Tonight, please complete the 4 SAT problems provided in class (or below)!

Tomorrow in class we will start our next unit, exploring bivariate data (scatterplots and linear regression)! We discussed a lot of this in day 2 of our summer academy, so you definitely want to get those notes out and review them--I'll be going through the stuff we addressed in the summer quickly in class. If you weren't at the summer academy, you definitely want to get these notes from a classmate.

This weekend, your homework is to complete the "Unit 2: Bivariate Data!" intro homework provided in class--if you want to get a head start, the data and questions are below!

• This homework is based on what we learned in the summer, and maybe something we didn't cover (interpreting y-intercept)--it is your responsibility to use your notes, your textbook, and any other online resources to figure this stuff out! We will only briefly cover the stuff on this assignment in class!
• This will definitely be checked on Monday!
• The AP Stats Guy has a bunch of awesome videos to help with this!
• Unit 2, Video 1: Intro to Regression
• Unit 2, Video 2: More Regression, Correlation and r
• Unit 2, Video 4: TI Stuff (calculator help)
• Unit 2, Video 8: Interpreting Slope and Y-Int
• There are plenty of other videos that relate to this unit, but these four directly connect to your homework!

TEST TOMORROW!

Tomorrow we will have our Unit 1 Test (covering chapters 2, 3, 4, 5, and 6)! STUDY, STUDY, STUDY! Then, on Friday we'll get into linear regression--see you there!

Here's an outline of what's on your test tomorrow!

• The test has both free response (FR) and multiple choice (MC) questions
• Use your chapter quizzes, our first mid-unit test, and your take home test to study!
• Find percentages above/below/between with the Normal curve using normalcdf (study the "classifying storms" problem we did in class!) (ch. 6)
• Find data values that cut off a given percentile/% above/% between using invnorm! (ch. 6)
• Compare boxplots IN CONTEXT! (study the last question from our chapter 5 take home quiz, along with the rubric I provided yesterday!) (ch. 5)
• Describe the shape, center, and spread of a given histogram/dotplot/stemplot (ch. 4)
• Know how the mean and median compare for different shapes of distributions (symmetric, skewed left, skewed right) (ch. 4)
• Read a stemplot to find median, range, percentiles (% below) (ch. 4)
• Know how shifting/rescaling affects measures of position and spread, and calculate these new values (study the table about Yuans on your take home test!) (ch. 6)
• Identify which dotplot/histogram/stemplot has the highest/lowest standard deviation (study our matching histograms to 6 variables classwork!) (ch. 5)
• Know how to calculate a z score and interpret its meaning in a complete sentence (ch. 6)
• Find probabilities from a two-way table (study the SSRI question on our first test, or look at the Titanic problems in chapter 3!)
• Reading boxplots--now the meanings of Q1, Median, Q3 as percentiles (what % of data falls below/above/between these values) (ch. 5)
• Completely identify the shape of histograms (ch. 4)
• Create graphical displays--boxplots, dotplots, stemplots, dotplots (ch. 4/5)

Use the multiple choice practice from today's class to study! The answers (and questions) are below--this is a bunch of practice for you!

And here are the answers:

1. B
2. C
3. C
4. A
5. D
6. (a.) 94.52%, (b.) 10.69%, (c.) 34104.05 miles (d.) 36112.13 miles 

Two's Day HW!

Tonight's homework is different for period A vs. periods E/F--see below. All answers are also posted below so you can check!

It is very important that you do tonight's homework because this is our only practice with invnorm before our unit 1 test on Thursday!

If you were out today we learned how to use "invnorm" in our calculator--you should do your best to teach yourself this from chapter 6 in our book, OR watch this video! to learn about invnorm--we have a test Thursday so you have to know this stuff!

Here's the homework:

Period A: 

1. Please complete questions f, g, h, and i on the "Calculating Z Scores and Percentiles" worksheet that we started in class on Thursday.
2. Then, please complete questions a,b,c,d on the "classifying storms" worksheet! This problem is specifically modeled after one of our test questions!
• I'd recommend starting with question b, then do c, then a. Finally, after you answer a,b, and c, try d!
• For question A, you have to interpret the meaning of this question in terms of pH--if a storm cannot be classified, what does that mean about its pH?
• Question D does not require the use of normalcdf or anything...don't overthink it!

Periods E,F:

1. Please complete the entire "Calculating ZScores and Percentiles" worksheet provided in class!

And here are the answers to the homework problems along with the questions 

Calculating Z Scores and Percentiles Key:

• 1. Mean = 68, Sx = 7.2, Median = 60.8, Range 64.8, IQR = 14.4
• 2a. 97.59%, 
• 2b. 0.38%, 
• 2c. 95.25%, 
• 2d. 36.94%, 
• 2e. 10.39% 
• 2f. IQ = 112.62, 
• 2g. Q3 = 110.12, 
• 2h. Q1 = 89.88
• 2i. IQR = 20.24 

Classifying Storms Key:

• a. 0.98%
• b. 67.59%
• c. 12.17%
• d. 9 minor storms, 32 mild storms, 6 super storms, and 1 not classified

TAKE HOME TEST DUE TUESDAY!

This (4 day) weekend be sure to COMPLETE YOUR TAKE HOME TEST! This is another test grade for us, and tests are the largest proportion of our average--take advantage of the take home aspect! Use your notes, use your resources online (like the links on the right), and take your time--get an A!

BE SURE TO SHOW ALL WORK FOR ANY MC QUESTIONS MARKED WITH **! 

This is due on Tuesday even if you were out! You can find our test under the "Classroom Powerpoints and Assignments" link. If for some reason this doesn't work, send me an email and I'll respond with a copy of the test! (carofano.fm@easthartford.org). NO EXCUSES! You will lose 10 points for each day this is late (and no tests will be accepted after Thursday).

On Tuesday we will get back to chapter 6; we'll do an AP problem or two to practice some "normalcdf" stuff, and then we'll learn a little about "invnorm." Then, it's on to our unit test which will be next Thursday or Friday!

If you are looking for some more help with the Normal model I strongly suggest watching some AP Stats Guy videos! He has 5 videos specific to chapter 6 (the Normal model) as well as a video about shifting and rescaling! Use these!

Have an awesome 4 day weekend! Rest up, relax, and come back ready to work hard! See you Tuesday!

Vocab Test Tomorrow!

Tomorrow we have our UNIT 1 Vocab Test!

• The test has 22 matching questions (match a vocabulary word to a definition)
• Use your chapter 2, 4, and 5 vocab quizzes to study!
• The vocab listed is posted below
• Also, USE YOUR NOTES! All this info is there
• Then, there are some open ended/short answer questions....for example...
• List the appropriate measures of center and spread for a skewed distribution
• List the appropriate measures of center and spread for a symmetric distribution
• List 3 measures of center
• List 3 measures of spread
• Identify different graphs for categorical data
• Identify the graphs for quantitative data
• Describe the shape of a given histogram boxplot as skewed, symmetric, unimodal, bimodal, uniform, etc.
• Know how the mean is affected by a skewed distribution
• Know how the mean compares to the median for a skewed left, skewed right, or symmetric distribution
• You will have 20-25 minutes to complete your test, so be prepared! 
• After the test we will do some more work with "normalcdf"--see you there!

Unit 1 Vocab List:

Tuesday HW!

Tonight, please complete the following in your textbook:

Page 124: 19, 25, 27, 45 

• For #45, find the z-score for the height of a Dutch man in Athens and decide if this is unusual!

Tomorrow in class we'll get back to our Normal percentile problems--which will be on our take home test! Then, we'll finish up with some more practice and a vocab test Thursday! See you there!

Monday HW!

Tonight, please complete the following in your textbook:

Page 123-128: 5, 7, 9, 17, 23

• Questions 5,7, and 9 are all based on using z-scores!
• Apply the Empirical Rule or the 68/95/99.7 rule for 17 and 23!
• When asked to draw the Normal model/Empirical rule you should sketch a diagram labeling 3 standard deviations above and below the mean (like our SAT example in class!)
• For more help, read about this rule on page 109, then look at the "working with the 68/95/99.7 rule" example on page 110!
• OR, do some googling--look up some videos or practice about the Empirical or 68/95/99.7 rule!
• OR, watch a video about this rule from the AP Stats Guy or from the videos aligned with our book!

Tomorrow we'll work a little more with this rule and start to expand on it! See you there!