Juniors--I hope you have (or had) an amazing time at prom this weekend! Enjoy the moment, take lots of pictures, and have fun with your friends (and family). And most importantly--be safe!
If you were out today see below for info about today's class.
HW #1: Chi Squared Multiple Choice!
- This weekend please complete the (12) chi squared multiple choice provided in class.
- The file is too big for images on the blog, so email me if you were out and need copy, or you can get it done Monday night
- This is practice for our Chi-Squared quiz (on Tuesday)!
- On Monday we'll start class with a last little bit of chi-squared stuff--we'll go back to the Titanic and explore how we find the expected counts for a chi-squared test for independence
- You will need to know how to do this for the second multiple choice question: use the formula below
- Expected (Cell) Count = (row total)(column total)/(total sample size)
- I'll also provide the answers on Monday and we'll go over any questions--then it's on to chapter 27, t-tests and t-intervals for slope!
HW #2: Take Home Test = Optional Test Grade!
- Tuesday in class you received (took) a second portion of today's test, labeled as a take home portion.
- This is an optional assignment, due Monday.
- If you choose to turn this in it will be graded and scored as a test!
- If you do not you will simply be exempted from the assignment and the score will not count for/against you.
- Why would I want to turn this in?
- For this take home portion you will have your notes and other resources available--if you feel like you can earn an A (or even a 100%) on this then it's a good a idea to get this in, as an A on a test will help to boost your average!
- If you did not do as well as you'd like on the take home test, or feel like you struggled today, then it's a good idea to get this in!
- (You will not get your in-class test back until next Monday or Tuesday, so you'll have to make this decision based on your level of confidence about today's test)
Here's the plan leading up to the AP exam! We're getting there!
Friday: All things t review!Monday: Start chapter 26Tuesday: "Inferences for Means" unit examWednesday 4/25: Ch. 26 Notes: Chi Squared "Math"Thursday 4/26: Chi Squared Practice/ClassworkFriday 4/27: Finish chi squared notes--expected counts and goodness of fit- Monday 4/30: Finish chi-squared, tart ch. 27 (t-tests and t-intervals for slope)
- Tuesday 5/1: Chi Squared Quiz Then more ch. 27
- Wednesday 5/2-Thursday 5/3: Finish ch. 27 and mix in AP exam review
- Friday 5/4: AP Exam Review = MC Practice Test (I will be out)
- Monday 5/7: AP Exam Review = Data Collection FR (I will be out)
- Tuesday 5/8 - Friday 5/11: AP exam review
- Monday 5/14 to Wednesday 5/16: AP exam review
- Thursday 5/17: AP STAT EXAM!
- Friday 5/18: STAR Testing (do not stress about this. don't even think about it. just show up and do your best.)
- Monday 5/21: Review for our last in-class test
- Tuesday 5/22: Last AP Stat in-class test! One more chance to boost our averages!
Friday's Class Summary:
- I did check the hw (2009 Free Response, completed and scored--survival rates for cardiopump v. cpr)
- Stamp = Probability Review!
- Complete parts a,b of the context below--this is on the back of the "Zuties" problem we used for our notes this week
- After the stamp we used part c of this problem to learn about a chi-squared test for goodness of fit--see below for some notes!
- First, we know we have to use a hypothesis test because the question asks for "appropriate statistical evidence."
- Any time we have one categorical variable with multiple categories we only have one option--a chi-squared test for goodness of fit!
- We then worked through the goodness of fit test:
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