Data Interpretation Flashcards

A bar chart shows hospital readmission rates of 15%, 22%, 18%, and 10% for four wards. What is the average readmission rate across all four wards?

Answer: 16.25%

The average is calculated as (15 + 22 + 18 + 10) / 4 = 65 / 4 = 16.25%.

A line graph shows patient recovery time decreasing from 10 days in 2018 to 6 days in 2023. What is the percentage decrease in recovery time?

Answer: 40%

Percentage decrease = (10 - 6) / 10 × 100 = 4/10 × 100 = 40%.

A pie chart shows 40% of clinic visits are for preventive care, 35% for acute illness, and 25% for chronic disease management. If the clinic sees 200 patients per week, how many visits are for chronic disease?

Answer: 50

25% of 200 = 0.25 × 200 = 50 patients per week for chronic disease management.

A table shows Drug A has a success rate of 3/5 and Drug B has a success rate of 7/10. Which drug has the higher success rate?

Answer: Drug B

Drug A = 3/5 = 0.60 (60%), Drug B = 7/10 = 0.70 (70%) — Drug B has the higher success rate.

A scatter plot shows a strong positive correlation between study hours and UMAT scores. What does this mean?

Answer: Students who study more tend to score higher on the UMAT

A positive correlation means that as one variable increases, the other tends to increase, but correlation does not imply causation.

Data shows that a hospital reduced medication errors from 120 per month to 84 per month after implementing a new system. By what percentage did errors decrease?

Answer: 30%

Percentage decrease = (120 - 84) / 120 × 100 = 36/120 × 100 = 30%.