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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

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IB MATH AA SL, Paper 2, November, 2022, TZ0, Solved Past Paper

Master the 2022 IB November for Paper 2 Mathematics AA SL with examiner tailored solutions and comments for TZ0

Question 1 [Explained]

The question presents data for a group of eight students, indicating their scores in Mathematics (represented as (x)) and Science (represented as ( y). It provides a table where each student’s Mathematics and Science scores are paired together. The question then asks to establish a regression line of ( y) based on (x), formulated as ( y = ax + b). This linear regression line will help understand how the Science scores might predict based on the Mathematics scores.

Mathematics scores (x)	64	68	72	75	80	82	85	86
Science scores (y)	67	72	77	76	84	83	89	91

Question 1 [a] [Explanation]

Determine the values of (a) and (b).

In this task, you need to find the specific values for two variables, (a) and (b).

Make sure to identify the conditions or equations that these variables satisfy, and then solve for their values accordingly.

Video Solution by an IB Examiner

Question 1 [b] [Explanation]

Calculate the value of Pearson's product-moment correlation coefficient, often denoted by r.

This statistic measures the strength and direction of the linear relationship between two variables on a scatterplot.

Video Solution by an IB Examiner