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.
01 Hours 30 Minutes
80 Marks
Calculator is allowed
IB MATH AA SL, Paper 2, May, 2023, TZ2, Solved Past Paper
Master the 2023 IB May for Paper 2 Mathematics AA SL with examiner tailored solutions and comments for TZ2
Question 1 [Explained]
A botanist is examining the growth patterns of certain plants over a period of time. The study involves recording the average heights of the plants at various intervals.
These measurements are taken on seven specific days throughout the duration of the experiment. The question presents a table which lists the days since the start of the experiment, denoted by (d), alongside the corresponding average height of the plants, denoted as (h) (in centimeters), for each of those days.
Number of days (d) | 2 | 5 | 13 | 24 | 33 | 37 | 42 |
Average height (h) | 10 | 16 | 30 | 59 | 76 | 79 | 82 |
Question 1 [a] [Explanation]
Consider the linear regression equation for predicting height (h) from distance (d), which takes the form h = ad + b. Could you determine the coefficients a (the slope) and b (the y-intercept) that best fit this model to the given data?
Video Solution by an IB Examiner
Question 1 [b] [Explanation]
Could you specify the numerical value of the Pearson correlation coefficient, denoted as (r), that quantifies the strength and direction of a linear relationship between two variables?
Video Solution by an IB Examiner
