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Question 19M.3.SL.TZ1.15b.i

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.3.SL.TZ1.15b.i
Level SL Paper 3 Time zone TZ1
Command term Outline Question number b.i Adapted from N/A
b.i.
[Maximum mark: 1]
19M.3.SL.TZ1.15b.i

Vitamin D is converted from an inactive form to an active form by exposure to sunlight. The graph shows the mortality (death rate) from falls in women over 75 as a function of latitude (distance from the equator).

[Source: Food and Agriculture Organization of the United Nations, 1997, B E C Nordin,
Calcium in Health and Disease, www.fao.org/3/W7336T/w7336t04.htm#calcium%20in%20health%20
and%20disease. Reproduced with permission]

(b.i)

Outline the relationship shown in the graph.

[1]

Markscheme

a. direct relationship/positive correlation ✔ 

b. increased latitude, higher mortality from falls ✔

Or vice versa

Examiners report

Nearly all candidates recognized a positive correlation.

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