Question 18N.2.SL.TZ0.1c
| Date | November 2018 | Marks available | [Maximum mark: 3] | Reference code | 18N.2.SL.TZ0.1c |
| Level | SL | Paper | 2 | Time zone | TZ0 |
| Command term | Evaluate | Question number | c | Adapted from | N/A |
Trends in tobacco smoking and mortality due to lung cancer were measured in male and female smokers aged 35 to 59 living in the United Kingdom from 1950 to 2000. The first graph represents the proportion of smokers in the population. The second graph represents the mortality rate (deaths per year per 100 000 people) from lung cancer.
Evaluate the evidence provided by the data in the graphs for smoking as a cause of lung cancer.
[3]
a. more smoking leads to more deaths
OR
there is a correlation between smoking and deaths from lung cancer ✔
b. «nevertheless» male mortality peaks in 1960 when declining numbers of smoking ✔
c. cancer takes time to develop causing delay between changes in smoking and cancer ✔
d. correlation does not prove causation ✔
e. the data shows deaths from lung cancer, not incidence ✔
