UCAT Numerical Data Interpretation 2

Question 1

A line graph shows patient satisfaction scores increasing from 68% in January to 82% in June. What is the percentage point increase?

Accepted Answer

14 pp

Answer

12 pp

Answer

16 pp

Answer

18 pp

Question 2

A table shows drug adverse-event rates: Drug X = 8 per 1,000 patients, Drug Y = 12 per 1,000 patients. What is the ratio of Drug X's rate to Drug Y's rate in simplest form?

Accepted Answer

2:3

Answer

1:2

Answer

3:4

Answer

4:5

Question 3

A hospital's length of stay data shows: mean = 5.2 days, median = 4.0 days. What does the difference between mean and median suggest about the data?

Accepted Answer

The data is skewed by some very long stays

Answer

The data is symmetrically distributed

Answer

The data has no variation

Answer

The mean is unreliable

Question 4

A scatter plot shows a strong positive correlation between handwashing compliance (%) and patient-acquired infection rates. Which interpretation is correct?

Accepted Answer

Higher compliance is associated with more infections

Answer

Higher compliance is associated with fewer infections

Answer

There is no relationship between compliance and infection rates

Answer

Compliance causes lower infection rates

Question 5

Clinical trial data shows that a new drug reduced systolic blood pressure by an average of 12 mmHg with a 95% confidence interval of 10–14 mmHg. What does the confidence interval indicate?

Accepted Answer

We are 95% confident the true population effect lies between 10 and 14 mmHg

Answer

The true effect is definitely between 10 and 14 mmHg

Answer

The drug works in 95% of patients

Answer

Only 5% of patients had a reduction outside this range

Question 6

A table shows 4 hospitals' readmission rates. Hospital A: 9%, B: 11%, C: 8%, D: 14%. What is the range of readmission rates?

Accepted Answer

6 pp

Answer

5 pp

Answer

7 pp

Answer

8 pp