Practice — what type is this question? (Statistics)
Read each question and decide what type it is before revealing the answer.
Grade 12Paper 2Level 1 — Knowledge
A scatter plot is drawn for the height (in cm) and service speed (in km/h) of 10 tennis players. Three values of r are given: r = 0,93 ; r = −0,42 and r = 0,52. 2.2.1 Which ONE of the values of r best represents the data in the scatter plot?
Source: DBE Mathematics Paper 2, November 2018, Question 2.2.1
Grade 12Paper 2Level 2 — Routine Procedures
The table below shows the monthly income (in rands) of 6 different people and the amount (in rands) that each person spends on the monthly repayment of a motor vehicle. MONTHLY INCOME: 9 000 ; 13 500 ; 15 000 ; 16 500 ; 17 000 ; 20 000 MONTHLY REPAYMENT: 2 000 ; 3 000 ; 3 500 ; 5 200 ; 5 500 ; 6 000 1.1 Determine the equation of the least squares regression line for the data. 1.2 If a person earns R14 000 per month, predict the monthly repayment that the person could make towards a motor vehicle.
Source: DBE Mathematics Paper 2, November 2019, Question 1.1–1.2