Question 18M.2.HL.TZ1.1g
| Date | May 2018 | Marks available | [Maximum mark: 2] | Reference code | 18M.2.HL.TZ1.1g |
| Level | HL | Paper | 2 | Time zone | TZ1 |
| Command term | Discuss | Question number | g | Adapted from | N/A |
The graph shows data from a small group of infected bats that died during hibernation. The average time interval between hibernation emergence periods and the date of death were recorded using temperature sensors for these bats.
Discuss whether the data in the graph show that there is a causal link between the date of death and the interval between hibernation emergence periods.
[2]
Arguments for a causal link
a. there is a trend/correlation/relationship (shown by the data in the graph)
b. explanations of how more frequent emergence from hibernation could cause earlier death (are plausible)/example of an explanation
Arguments against a causal link
c. there is a correlation but this does not show a causal link / correlation does not prove causation
d. more data/further research is needed to show the causes
e. there is (much) variation/spread in the data
f. other factors can affect the date of death
