Official 2020 AP Stats Exam College Board Lesson #19 FRQ Friday #3 5_1_2020

Hi all! 



That was a great lesson from Brendan Murphy!  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=GB-RHiLTzsQ&list=PLoGgviqq4845u-QDW3bikMhC4uQsuYDpy&index=28

• 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-April 24: Units 1-5
• NEW:  EXAM POINTERS FOR DOING WELL ON THE 2020 EXAM: 4/27—5/1.   5/4 - 5/7 : TWO ACTUAL 2020 PRACTICE TESTS!!😊
• 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 2002 MC #24 “psychologist” example:

• This is a nice review of statistically significant (P-value < Alpha: Reject the Null Hypothesis) with interpretation

---THESE ARE FRQs FOR 2018 AP STATS EXAM FRQ #1 “grocery store”, 2007 AP STATS EXAM FRQ #5 “cell phone driving”, 2002 AP STATS EXAM FRQ #4,---  



2018 AP STATS EXAM FRQ #1 “grocery store” (more parts than usual exams possibly simulating a 2020 exam in that way):

• a): nice review of how to write an LSRL from a computer output WITH CONTEXT
• b): nice review of how to write an interpretation of the y-intercept from a computer output WITH CONTEXT
• c): nice review of how to write an interpretation of the slope from a computer output WITH CONTEXT
• d): nice review of how to write an interpretation of the coefficient of determination (r²) from a computer output WITH CONTEXT
• e): nice review of how to write an interpretation of the correlation coefficient (sqrt (r²) = r) from a computer output using Strength Linear Direction  WITH CONTEXT
• f): nice outlier explanation from a scatter plot
• g): nice meaning  of the outlier explanation from a scatter plot
• h): nice review of calculating a residual and defining it

2007 AP STATS EXAM FRQ #5 “cell phone driving” (2 threads/themes in one question possibly simulating a 2020 exam in that way):

• a):  Nice reminder of the difference between an observational versus experimental study and definition of experiment (treatment imposed) WITH CONTEXT                
• b):  Nice reminder of the State step of SPDC for a 2 prop z-test
• c):  Nice reminder of the Plan step of SPDC for a 2 prop z-test in the case where a condition (in this instance Normal of RNI) fails so the “conditions are NOT met”
• d): Nice reminder of the Conclude step of SPDC for a 2 prop z-test where we failed to reject the null hypothesis  WITH CONTEXT with interpretation of the P-Value

2002 AP STATS EXAM FRQ #4:

• a):  nice review of how to write an LSRL from a computer output WITH CONTEXT
• b):  nice review of how to write an interpretation of the correlation coefficient (sqrt (r²) = r) from a computer output using Strength Linear Direction  WITH CONTEXT  
• c):  nice example of how when some extreme points are removed from a scatter plot, the LSRL can have a completely different slope and direction with the remaining points

Try the homework #37 from the 2002 exam before Monday if you can.

PRACTICE 2020 EXAM MONDAY!!!!!!!!!!

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



Take care!!