Ap statistics 2021 frq

The FRQ sets for AP Gov got released today, so I wanted to make a post to discuss the correct answers in the comments. The official scoring has not yet been released, so this is just to figure out possible scores via collaboration. ... 2022 r/Fantasy Bingo Statistics ...

Two-Sample Approach: A response that indicates that the distribution of irritability scores for each of the two samples, placebo AND omega-3, are not badly skewed may satisfy component 2. If the response correctly reports the value of the t-statistic. as 2.256, then the response may satisfy component 3.2021 AP Free Response Solutions. Updated: Jul 14, 2023. If you're looking for help in AP Physics 1, check out a new course I've put together hereI'm going to put together my own solutions for the 2021 AP Physics 1, AP Physics 2, AP Physics C, AP Calculus AB, AP Calculus BC, and AP Statistics Free Response questions here, after the questions are ...Ë In a normal distribution, approximately 9.2 percent of the z-scores are below. 0.15 ̄ -1.33. However, there are no running times less than 4.4 seconds, which indicates that there are no running times with a z-score less than -1.33. Therefore, the distribution of 40-yard running times is not approximately normal.AP ® European History 2021 Free-Response Questions . Document 2 . Source: William Cobbett, British essayist and political commentator, London, 1808 . The recent news from India, or, "our Empire in the East," is of a gloomy complexion, in my sight, only because it gives an account of the loss of a great number of English officers and soldiers.Walkthrough of the 2021 AP Statistics Free Free Response #5 (May 17, 2021 administration). Join My Discord Study Server: https://discord.gg/8WGtt3rCorrecti...

The Course at a Glance provides. useful visual organization of the AP Statistics curricular components, including: Sequence of units, along with approximate weighting and suggested pacing. Please note, pacing is based on 45-minute class periods, meeting five days each week for a full academic year. Progression of topics within each unit.The AP Statistics exam is divided into two sections: multiple-choice (40 questions, 90 minutes) and free-response (6 questions, 90 minutes). The mean score for the AP Statistics exam in 2022 was 2.89 out of 5. This is slightly lower than the mean score for all AP subjects in 2022, which was 2.92. The pass rate of the AP Statistics Exam for 2022 ...Scoring notes: • To earn the point the interpretation must include "medication in the patient," "approaches 12," and units (milligrams), or their equivalents. Total for part (b) 1 point. (c) Use separation of variables to find y = A ( t ) , the particular solution to the differential equation dy = dt. 12 − y.Note: This is an example of 2020 Question 2, a multi-focus free-response item with allotted time of 15 minutes (plus 5 minutes to submit). Question 1 is a longer multi-focus free-response item, with allotted time of 25 minutes (plus 5 minutes to submit). Students at an agricultural station conducted a study to compare genetically modified (GM ...This question covers content from Unit 1: Exploring One-Variable Data of the course framework in the AP Statistics Course and Exam Description. Refer to topic 1.7, and learning objectives UNC-1.I, and UNC-1.K. Sample: 1A Score: 4. The response earned the following: Part (a) - E; Part (b) - E; Part (c) - E.Question 1. (Suggested time—40 minutes. This question counts as one-third of the total essay section score.) In Ai's poem "The Man with the Saxophone," published in 1985, the speaker encounters a man playing a saxophone. Read the poem carefully.2021 Ap Stats Frq Answers Barron's AP Statistics Martin Sternstein 2010 One Diagnostic and five full-length Advanced Placement Practice Exams are presented in the manual with all questions answered and explained. Equally valuable to prospective test takers is the author's 15-chapter topic review, covering virtuallyFree-Response Questions. Download free-response questions from past exams along with scoring guidelines, sample responses from exam takers, and scoring distributions. If you are using assistive technology and need help accessing these PDFs in another format, contact Services for Students with Disabilities at 212-713-8333 or by email at ssd@info ...

The AP Psych free-response questions often trip students up. For the two sample questions above, the mean scores were a 2.21/7 and a 2.96/7, respectively. ... Currently, the College Board has AP Psychology FRQ from 2021 as well as 1999-2019. That's dozens of free-response questions for you to review and try out! The AP Psych exam was updated in ...Sample: 6B. Score: 3. The response earned 1 point in part (a) for identifying mRNA III. The response earned 1 point in part (b) for describing the phases and changes of mRNA I concentration throughout the experiment, concluding with decreasing at "about 10 hours.".Scoring Statistics 2021 Free-Response Questions Question Mean . Standard Deviation Number of Possible Points ; Sustained Investigation 16.16 ; 4.04 : 24 : Selected Works 6.49 ; ... 2021; AP Exam Administration; Advanced Placement; Scoring Statistics; scoring information; scoring resources; scoring commentary; teacher resources; exam information ...Questions & Worked Solutions For AP Statistics 2021 Exam. AP Statistics 2021 Exam Questions (pdf) 2021 AP Statistics Free Response #1. 2021 AP Statistics Free Response #2. 2021 AP Statistics Free Response #3. Corrections for Question 3: (b) I left out an interpretation of the expected value. One way to write it would be to say "An employee ... AP® Biology 2021 Scoring Guidelines . Question 2: Interpreting and Evaluating Experimental Results with Graphing . 8 points . Geneticists investigated the mode of inheritance of a rare disorder that alters glucose metabolism and first shows symptoms in adulthood. The geneticists studied a family in which some individuals of generations II and III

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12 days and 21 days. Provides a justification for part (b-i) by calculating the lower and upper outlier criteria for the 1.5 × IQR rule (e.g., "using method A, an outlier is any value below. days or above 11 days") 3. Correctly identifies the one outlier in part (b-ii) as the patient who stayed for. 21 days. 4.Scoring Statistics 2021 Free-Response Questions Set 1 Question Mean . Standard Deviation Number of Possible Points ; 1 9.31 ; 2.90 : 15 : ... collegeboard.org . CollegeBoard ; Title: 2021 AP Exam Administration Scoring Statistics - AP Physics C: Mechanics: Set 1 Author: College Board Subject:1. The sizes, in square feet, of the 20 rooms in a student residence hall at a certain university are summarized in the following histogram. Based on the histogram, write a few sentences describing the distribution of room size in the residence hall. Summary statistics for the sizes are given in the following table. Mean.The AP Macroeconomics Exam includes two sections. The first section contains 60 multiple-choice questions. The second section is the free-response section, which includes one long question and two short questions. Below is a detailed breakdown of both the multiple choice and free-response sections. Starting with the 2023 exam, a four-function ...About the Exam. The AP U.S. History Exam will test your understanding of the historical concepts covered in the course units, as well as your ability to analyze primary and secondary sources and identify patterns and connections that can support a historical interpretation. Exam Duration. 3hrs 15mins.AP® Statistics 2021 Scoring Commentary. Question 1 (continued) In part (c) the response indicates that in a skewed distribution the mean is skewed to the right, and the standard deviation is larger but does not discuss the impact of a skewed distribution on the quartiles, median, or IQR. Therefore component 1 is not satisfied.

AP Statistics. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket The natural rate of unemployment is 5%, the frictional rate of unemployment is 4%, and the actual rate of unemployment is 7%. (a) What is the numerical value of the cyclical rate of unemployment in Flowerland? (b) Assume the foreign demand for lavender oil produced in Flowerland increases. View 2021 FRQ #1-4.pdf from STATISTICS 2021 at Michigan State University. AP Statistics 2021 Free-Response Questions Part A Questions 1-5 Spend about 1 hour and 5 minutes on this part of theScoring notes: • To earn the point the interpretation must include "medication in the patient," "approaches 12," and units (milligrams), or their equivalents. Total for part (b) 1 point. (c) Use separation of variables to find y = A ( t ), the particular solution to the differential equation dy = dt. 12 − y.Advanced Placement; AP; Score Distributions Keywords: Advanced Placement; AP; Score Distributions; 2021 AP Exam Administration; scoring information; global score distributions; teacher resources; exam resources; exam information; ADA Created Date: 10/5/2021 4:54:41 PMHow to Practice AP Statistics Free-Response Questions. The best way to study for the AP Stats Free-Response section is to answer lots of practice free-response questions. Fortunately, the College Board makes this easy to do! On their website, you can find official free-response questions from 1998-2021.Exam questions assess the course concepts and skills outlined in the course framework. For more information, download the AP U.S. History Course and Exam Description (CED).. Scoring rubrics - general scoring criteria for the document-based and long essay questions, regardless of specific question prompt - are available in the course and exam description (CED).AP® STATISTICS 2017 SCORING GUIDELINES Question 1 (continued) Partially correct (P) if the response includes only two of the three components. Note: If the response identifies the slope as -16.46 (the intercept value), the second component is satisfied only if the response states that for each one-meter increase in length there is a decreaseThese types of questions have become more and more common on the AP exam, so it is important to feel comfortable and confident with them. 2023 #6 (data analysis) 2023 #3. 2022 #3 (experiment design) 2021 #1. 2020 #1 parts c-e.Fiveable is best place to study for your AP® exams. Free AP Statistics study guides for AP Cram Sessions 2021. ... 🌶️ AP Statistics Finale May 16, 2021. streamed by Josh Argo. AP Statistics Finale . slides by Josh Argo. ... AP Statistics Free Response Questions.The AP Psych free-response questions often trip students up. For the two sample questions above, the mean scores were a 2.21/7 and a 2.96/7, respectively. ... Currently, the College Board has AP Psychology FRQ from 2021 as well as 1999-2019. That's dozens of free-response questions for you to review and try out! The AP Psych exam was updated in ...

45 Questions | 1 Hour 45 minutes | 50% of Exam Score. Part A: 30 questions; 60 minutes (calculator not permitted). Part B: 15 questions; 45 minutes (graphing calculator required). Questions include algebraic, exponential, logarithmic, trigonometric, and general types of functions. Questions include analytical, graphical, tabular, and verbal ...

The correct formal statement is: The 97.5 percent lower confidence bound for the difference in the means is above zero (0.16), so at the 0.025 level we would conclude that the mean rating for the treated berries is significantly lower than the mean for the untreated strawberries. 4 Complete Response.2021 AP Free Response Solutions. Updated: Jul 14, 2023. If you're looking for help in AP Physics 1, check out a new course I've put together hereI'm going to put together my own solutions for the 2021 AP Physics 1, AP Physics 2, AP Physics C, AP Calculus AB, AP Calculus BC, and AP Statistics Free Response questions here, after the questions are ...Ap Statistics 2021 Frq Answers Barron's AP Statistics Martin Sternstein 1998 This all-new prep manual reflects the growing trend in statistics courses taken by high school students preparing for college. Recommended as a supplement to classroom textbooks or as a self-teaching preparation, this guide offers 545 practice ...AP Statistics 2021-2022 All standards in the state course description are designed to be learned by the end of the course. This guide represents a recommended timeline and sequence to be used voluntarily by teachers for planning purposes. Specific questions regarding when content will be addressed in a specific course is best answered by the ... Download free-response questions from past exams along with scoring guidelines, sample responses from exam takers, and scoring distributions. If you are using assistive technology and need help accessing these PDFs in another format, contact Services for Students with Disabilities at 212-713-8333 or by email at [email protected]. The ... 2021 AP Stats FRQ #2 - Experimental Designa. Data collection and response biasb. Explain how randomization allows results to be generalized to target populat...2021 College Board. Visit College Board on the web: collegeboard.org. 2. Continue your response to QUESTION 1 on this page. (b) Consider isothermal process C. Compare the magnitude and sign of the work W done on the gas in process C to the magnitude and sign of the work in the portion of the cycle in part (a).

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AP Statistics. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday TicketSection I: Multiple Choice. 50 Questions | 1 Hour 30 Minutes | 50% of Exam Score. Questions are either discrete questions or question sets, in which students are provided with a stimulus or a set of data and a series of related questions. The section includes 5 individual multi-select questions (2 options are correct).Directions: You have 1 hour and 40 minutes to answer all four of the following questions. It is suggested that you spend approximately 20 minutes each on Questions 1, 2, and 3 and 40 minutes on Question 4. Unless directions indicate otherwise, respond to all parts of all four questions. In your response, use substantive examples where appropriate.Question 1. (Suggested time—40 minutes. This question counts as one-third of the total essay section score.) In Ai's poem "The Man with the Saxophone," published in 1985, the speaker encounters a man playing a saxophone. Read the poem carefully.AP Calculus 2021 AB FRQ Solutions Louis A. Talman, Ph.D. Emeritus Professor of Mathematics Metropolitan State University of Denver May 11, 2021 1. Solution: We begin by writing rAP Calculus AB 2021 Free Response Question 4. Show Step-by-step Solutions. Let f be a continuous function defined on the closed interval -4 ≤ x ≤ 6. AP Calculus AB 2021 Free Response Question 5. Show Step-by-step Solutions. Consider the function y = f (x) whose curve is given by the equation 2y 2 - 6 = y sin x for y ≥ 0.20 free AP statistics practice tests. Over 200 AP statistics practice questions to help you with your AP statistics exam prep.AP Psychology Exam: 2021 Results. The following data reflect the 262,700 students worldwide who took either the paper or the digital AP Psychology Exam in May. Data from students who tested in June is not yet available. AP Psychology score distributions, 2019 vs. 2021. The following table enables comparisons of student performance in 2021 to ...The Course at a Glance provides. useful visual organization of the AP Statistics curricular components, including: Sequence of units, along with approximate weighting and suggested pacing. Please note, pacing is based on 45-minute class periods, meeting five days each week for a full academic year. Progression of topics within each unit.College Boar d, Ad v anced Placement, AP, AP Centr al, and the acorn logo ar e r egister ed tr ademarks of College Boar d. Visit Colleg e Board on the web: coll egeboar d.org .8. Continue your response to QUESTION 3 on this page. (b) Calculate and interpret the expected value for the number of gift cards a particular employee will receive in a 52-week year. Show your work. (c) Suppose that Agatha, an employee at the company, never receives a gift card for an entire 52-week year.AP Exams - May 2021. ** This table reflects 4,578,302 AP Exams taken by 2,548,228 students from 22,802 secondary schools. ** In 2020, the AP Studio Art Program was renamed AP Art and Design. The course names are Drawing, 2-D Art and Design, and 3-D Art and Design. *** Standard students generally receive most of their foreign language training ... ….

AP®STATISTICS 2019 SCORING GUIDELINES. Question 1. Intent of Question. The primary goals of this question were to assess a student's ability to (1) describe features of a distribution of sample data using information provided by a histogram; (2) identify potential outliers; (3) sketch a boxplot; and (4) comment on an advantage of displaying ...The 2022 AP Statistics exam will be split equally between two sections: multiple-choice and free-response questions. Each section is worth 50 percent of the exam score. You will have 1 hour, 30 minutes to answer 40 multiple-choice questions and 1 hour, 30 minutes to answer 6 free-response questions. The chart below shows the breakdown of the ...Questions, Solutions for AP Statistics 2021 Exam Mechanics, examples, answers and step-by-step solutions AP® Statistics 2021 Scoring Commentary. Question 1 (continued) In part (c) the response indicates that in a skewed distribution the mean is skewed to the right, and the standard deviation is larger but does not discuss the impact of a skewed distribution on the quartiles, median, or IQR. Therefore component 1 is not satisfied. College Boar d, Ad v anced Placement, AP, AP Centr al, and the acorn logo ar e r egister ed tr ademarks of College Boar d. Visit Colleg e Board on the web: coll egeboar d.org .AP® Statistics 2003 Scoring Guidelines Form B. The materials included in these files are intended for use by AP teachers for course and exam preparation; permission for any other use must be sought from the Advanced Placement Program®. Teachers may reproduce them, in whole or in part, in limited quantities for noncommercial, face-to-face ...Download free-response questions from past exams along with scoring guidelines, sample responses from exam takers, and scoring distributions. If you are using assistive technology and need help accessing these PDFs in another format, contact Services for Students with Disabilities at 212-713-8333 or by email at [email protected] FRQ Unit 4 Exam Practice Prompt. A high school debate team has 15 members, 10 of whom are "upperclassmen" (11th or 12th grade) and 5 of whom are "lowerclassmen" (9th or 10th grade). For an upcoming tournament, the debate coach wants to use a random-selection process to choose who will attend, as all of the members of the team have ...Directions: Questions 1–3 are long free-response questions that require about 23 minutes each to answer and are worth 10 points each. Questions 4–7 are short free-response questions that require about 9 minutes each to answer and are worth 4 points each. For each question, show your work for each part in the space provided after that part. Ap statistics 2021 frq, Scoring Statistics 2021 Free-Response Questions Set 2 Question Mean . Standard Deviation Number of Possible Points ; 1 4.48 ; 3.14 : 10 : ... collegeboard.org. CollegeBoard ; Title: 2021 AP Exam Administration Scoring Statistics - AP Macroeconomics: Set 2 Author: College Board Subject:, AP Calculus 2021 AB FRQ Solutions Louis A. Talman, Ph.D. Emeritus Professor of Mathematics Metropolitan State University of Denver May 11, 2021 1. Solution: We begin by writing r 0 = 0, r 1 = 1, r 2 = 2, r 3 = 2:5, and r 4 = 4. (a) To approximate f0(2:25) from the given data, we write, Check out statistics related to WordPress usage, plugins, themes, and security to better understand the most popular open-source CMS in the world. Trusted by business builders worl..., For 2024, the Clemson advanced placement statistics practice exam will be held from 8:30 a.m.-2:30 p.m. April 20. Information about the exact location will be added later in the Spring semester. Registered teachers will be receive more specific information and reminders as the event approaches. Register for the Exam., AP ® Seminar 2021 Free-Response Questions. Part B . Suggested time — 1 hour and 30 minutes . Directions: Read the four sources carefully, focusing on a theme or issue that connects them and the different perspective each represents. Then, write a logically organized, well-reasoned, and well-written argument that, Solar panels produce clean energy for homeowners and businesses worldwide. Read our guide for must-know facts and statistics about this fast-growing industry. Expert Advice On Impr..., Questions 1 and 2 are long free-response questions that require about 25 minutes each to answer. Questions 3 through 6 are short free-response questions that require about 10 minutes each to answer. Read each question carefully and completely. Answers must be written out in paragraph form., Ap Statistics Released Frq 2023 Princeton Review AP Computer Science Principles Prep, 2022 The Princeton Review 2021-08-03 Make sure you're studying with the most up-to-date prep materials! Look for the newest edition of this title, The Princeton Review AP Computer Science Principles Prep, 2023 (ISBN: 9780593450734, on-sale August 2022)., Intent of Question. The primary goals of this question were to assess a student's ability to (1) state the appropriate hypotheses; (2) identify and compute the appropriate test statistic; (3) make a conclusion in the context of the problem; and (4) compare two sets of proportions to identify the preferred habitat., AP ® Statistics 2022 Free-Response Questions . Begin your response to . QUESTION 1 . on this page. STATISTICS SECTION II . Total Time—1 hour and 30 minutes . 6 Questions . Part A Suggested Time—1 hour and 5 minutes 5 Questions . Directions: Show all your work. Indicate clearly the methods you use, because you will be scored on the correctness, 2021 AP ® Statistics Sample Student Responses and Scoring Commentary Inside: Free Response Question 5, choose not AP® Human Geography 2021 Scoring Guidelines (D) Explain how access to education for women in less developed countries is likely to affect the total fertility rate. 1 point . Accept one of the following: • D1. The total fertility rate is likely to decrease with increased access to education for, Note: This is an example of 2020 Question 2, a multi-focus free-response item with allotted time of 15 minutes (plus 5 minutes to submit). Question 1 is a longer multi-focus free-response item, with allotted time of 25 minutes (plus 5 minutes to submit). Students at an agricultural station conducted a study to compare genetically modified (GM ..., Download free-response questions from past exams along with scoring guidelines, sample responses from exam takers, and scoring distributions. If you are using assistive technology and need help accessing these PDFs in another format, contact Services for Students with Disabilities at 212-713-8333 or by email at [email protected]. Expand All., Statistical treatment in a thesis is a way of removing researcher bias by interpreting the data statistically rather than subjectively. Giving a thesis statistical treatment also e..., Note: This is an example of 2020 Question 2, a multi-focus free-response item with allotted time of 15 minutes (plus 5 minutes to submit). Question 1 is a longer multi-focus free-response item, with allotted time of 25 minutes (plus 5 minutes to submit). Students at an agricultural station conducted a study to compare genetically modified (GM ..., Part (b) was scored essentially correct (E). 2022 College Board. Visit College Board on the web: collegeboard.org. AP® Statistics 2022 Scoring Commentary. Question 5 (continued) In part (c) the response does not use the simulation to calculate the correct p-value; therefore, components 1 and 2 are not satisfied., Visit College Board on the web: collegeboard.org. AP® Statistics 2021 Scoring Commentary. Question 3 (continued) Sample: 3B Score: 3. The response earned the following: part (a) - E; part (b) - P; part (c) - E. In part (a) the response correctly defines the random variable in part (a-i) satisfying component 1., Ap statistics review stats guide albert procedure inference 2021 frq examThe best ap® statistics review guide for 2021. Guide albert mcqAp statistics chapter 5 test Stats statistics outlierThe best ap® statistics review guide for 2023., Sure seems like the College Board wanted AP Stats students to understand two-way significance tests — a central feature in two separate problem parts. Also thought the wording and direction in FRQ 5 where a positive difference (Placebo — Omega 3) > 0 indicates a decrease in irritability might present some challenges for students in defining ..., Explain the importance of world cities as nodes in the hierarchical diffusion of a globalized culture. Explain ONE way the Internet may interrupt the hierarchical diffusion of a globalized culture. Explain ONE difference between world cities and metacities. Using the data in the table, explain ONE limitation of the world city classification ..., 2024 AP Statistics exam study guides, practice quizzes, live reviews, ... AP Statistics Free Response Questions. ... AP Stats Unit 7 FRQ Practice Prompt (#1) Answers & Feedback . 12 min read • written by Jerry Kosoff. AP Cram Sessions 2021. AP Statistics Cram Unit 1: Exploring One Variable Data. slides by Josh Argo., The 4-year moving averages for the typhoon data are provided in the table below. For example, the Eastern Pacific 4-year moving average for 2000 is the average of 22, 16, 15, and 21, which is equal to 18.50. Year. Number of Typhoons in the Eastern Pacific. Eastern Pacific 4-year moving average., Here's my own PDF solutions for the released 2023 AP exams for AP Calculus, Statistics, and Physics. If you're looking for help in AP Physics 1, check out a new course I've put together here AP Statistics PDF SolutionYouTube SolutionsFRQ #1 FRQ #2 FRQ #3FRQ #4FRQ #5 FRQ #6AP Calculus ABPDF Solution (AB)PDF Solution (BC) …, The response does not satisfy component 3 because, although the response correctly names the test, the z-statistic formula provided is not correct. Section 1 was scored partially correct (P). Question 4 (continued) In section 2 the response satisfies components 1 and 2 by correctly checking the conditions., AP® Statistics 2004 Free-Response Questions. The materials included in these files are intended for noncommercial use by AP teachers for course and exam preparation; permission for any other use must be sought from the Advanced Placement Program®. Teachers may reproduce them, in whole or in part, in limited quantities, for face-to-face ..., Fiveable is best place to study for your AP® exams. Free AP Statistics study guides for AP Cram Sessions 2021. ... 🌶️ AP Statistics Finale May 16, 2021. streamed by Josh Argo. AP Statistics Finale . slides by Josh Argo. ... AP Statistics Free Response Questions., Write your responses to this question only on the designated pages in the separate Free Response. booklet. Write your solution to each part in the space provided for that part. A particle, P, is moving along the x-axis. The velocity of particle P at time t is given by v t P () = sin t1.5. for 0 £ t £ p ., Identities of the 2021 AP English Language Exams' Cited Authors. Across the exam versions administered in 2021, 61.8% of the cited texts' authors identified as non-White, 50.5% of the authors identified as female: US Census Category Authors within the 2021 Exams; Asian (5.9%) 8 (7.3%) Black (13.4%) 36 (32.7%), The Yuga Labs digital land sale this weekend, a mass mint of new NFTs that temporarily clogged the Ethereum blockchain, is not just making money for the company behind the new set ..., Visit College Board on the web: collegeboard.org. 8 AP ® Statistics 2021 Free-Response Questions Continue your response to QUESTION 3 on this page. ( b ) Calculate and interpret the expected value for the number of gift cards a particular employee will receive in a 52 -week year., Ap Statistics Frq By Topic Cracking the AP Statistics Exam Madhuri S. Mulekar 2004 The fiercer the competition to get into ... 5 Steps to a 5: AP Statistics 2022 Jared Derksen 2021-08-04 MATCHES THE LATEST EXAM! Let us supplement your AP classroom experience with this easy-to-follow study guide. The immensely, 17.2. 24.9. The following comments on the 2021 free-response questions for AP® Statistics were written by the Chief Reader, Dr. Ken Koehler, PhD. They give an overview of each free-response question and of how students performed on the question, including typical student errors.