A study finds that people who own more books earn higher salaries. Which is the most reasonable conclusion?
Answer and explanation
Correct answer: D. Book ownership is associated with salary, but the study does not show it causes higher pay
- Step 1: Correlation is not causation. Step 2. The association could be due to education or interest levels. Answer: Book ownership is associated with salary, but the study does not show it causes higher pay. Why not the others: The second and third assert a causal direction; the fourth denies the observed association.
Practise more Probability, sets and arguments.
Free questions with an explanation for every one, and full timed UCAT mock tests.
More Probability, sets and arguments questions
- A bag holds 6 red, 6 blue and 3 green counters. Two are taken at random without replacement. What is the probability that both are red?
- Of 50 students, 27 have a bicycle, 29 have a scooter and 16 do neither. How many have a bicycle but do not have a scooter?
- 4 people (Amira, Grace, Isla, Jamal) are ranked from oldest to youngest. Grace is older than Jamal. Isla is immediately older than Amira. Is…
- A bag holds 3 red, 3 blue and 5 green counters. Two are taken at random without replacement. What is the probability that neither is red?
- A restaurant argues: 'Sales of our vegetarian dishes rose 20 per cent, so more of our customers must have become vegetarian.' Which fact mos…
- On an island each person either always tells the truth or always lies. Tom says: "Priya is a truth-teller." Priya says: "Exactly one of the…