Official 2020 AP Stats Exam College Board Lesson #15 FRQ Friday #2 4_24_2020


HI all!



First--

Here’s a short encouraging video for you from College Admission Leaders who support AP:

https://www.youtube.com/watch?v=YIYgobKJbRQ&feature=youtu.be&SFMC_cid=EM303129-&rid=47698842



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Hi all! 



That was a great lesson from Luke Wilcox!  Here are my take-aways and teacher comments:



THIS ONE IS ANOTHER MUST WATCH FOR UNDERSTANDING OF FRQ SCORING AND GRADING!! REMINDER: THERE ARE ONLY 2 FRQs TYPES ON THE 2020 EXAM!!



Reminders

·         4 weeks of lessons and preparation for the exam is being taught/reviewed (recorded) M-F: 2-2:45 PM in these YouTube Lessons 😊  https://www.youtube.com/watch?v=FEDVBzwipBw&list=PLoGgviqq4845u-QDW3bikMhC4uQsuYDpy&index=23



  • Lessons: April 6-10: Units 6-7 taught first because many schools either didn’t get to these entirely or at all (we did get through most of this); April 13-May 1: Units 1-5
  • AP Stats Exam Friday May 22 from 2-2:45 EST
  • All resources available at Statsmedic.com/youtube
  • If you need a device take the Exam go to cb.org/tech



Last Night’s homework MC “track meet” example:

  • This is a nice review of difference of means and standard deviation (ALWAYS ADD) with formula  application



---THESE ARE FRQs FOR Unit 4: Prob, RVs and Prob Distribution, Unit 4: Prob, RVs and Prob Distribution, Unit 5: Sampling Distributions---  



2011 FRQ #2 “Political Party Registration”:

  • a): nice conditional probability question from a two-way table
  • b): nice test for independence question from a two-way table
  • c): nice demonstration of a segmented bar graph for gender given independence
  • EXTREMELY IMPORTANT EXPLANATION ON GRADING/SCORING RUBRIC USING Essentially correct, Partially Correct, Incorrect categories



2008 FRQ #3 “Arcade game”:

  • a):  Nice expected value calculations from two probability distributions
  • b):  Nice reminder that AND means MULTIPLY for probability for the three possibilities of “-1”
  • c):  Nice reminder that OR means ADD for probability for the solutions in part b)
  • d): nice use of part c) and sum of probability =1 idea to fill in the probability distribution table and probability calculation with the completed table
  • EXTREMELY IMPORTANT EXPLANATION ON GRADING/SCORING RUBRIC USING Essentially correct, Partially Correct, Incorrect categories



2014 FRQ #3 “Sick days”:

  • a):  nice review of z-score and the normalcdf function
  • b):  nice explanation of an approximate sampling distribution for mean (xbar), review of z-score and the normalcdf function, and reminder to answer the question completely (compare to part a))  
  • c):  Again: AND means MULTIPLY for probability
  • EXTREMELY IMPORTANT EXPLANATION ON GRADING/SCORING RUBRIC USING Essentially correct, Partially Correct, Incorrect categories







Please email me any time with any question, comments, thoughts.



Take care!!

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