These are explanations and solutions for IB past papers, not the official version. For official papers, you can go to IB Follet or access them through your school.
These are explanations and solutions for IB past papers, not the official version. For official papers, you can go to IB Follet or access them through your school.
These are explanations and solutions for IB past papers, not the official version. For official papers, you can go to IB Follet or access them through your school.
These are explanations and solutions for IB past papers, not the official version. For official papers, you can go to IB Follet or access them through your school.
02 Hours
110 Marks
Calculator is allowed
IB MATH AA HL, Paper 2, November, 2021, TZ0, Solved Past Paper
Master the 2021 IB November for Paper 2 Mathematics AA HL with examiner tailored solutions and comments for TZ0
Question 1 [Explained]
In a music academy, Lucy has tracked the performance of eight students who recently took their piano diploma exams. Each student was graded on a scale of 150. Alongside their scores, Lucy also noted how many hours each student practiced on a weekly basis leading up to their exams. The data encompassing both the scores and the weekly practice hours are organized in a table for review.
Average weekly practice time (h) | 28 | 13 | 45 | 33 | 17 | 29 | 39 | 36 |
Diploma score (D) | 115 | 82 | 120 | 116 | 79 | 101 | 110 | 121 |
Question 1 [a] [Explanation]
Determine the value of Pearson’s product-moment correlation coefficient, (r), for this set of data.
Video Solution by an IB Examiner - Coming soon
Question 1 [b] [Explanation]
Consider a regression model where the dependent variable (D) is predicted based on the independent variable (h). The model is described by the equation (D = ah + b). Identify the coefficients (a) and (b) in this equation.
Video Solution by an IB Examiner - Coming soon
Question 1 [c] [Explanation]
If one of these eight students feels disappointed about her test results and believes more practice would have helped, can we estimate how much better her score might have been if she had added five more hours of study per week?
Video Solution by an IB Examiner - Coming soon
Question 1 [d] [Explanation]
Lucy suggests that a student's practice hours are directly linked to their final scores on the diploma. Evaluate the accuracy of this claim.
Video Solution by an IB Examiner - Coming soon