Data Interpretation Flashcards

A table shows 60 arrests: 20 for theft, 15 for assault, 10 for drug offences, 15 for other. What fraction are for assault?

Answer: 1/4

Assault = 15 out of 60. Fraction = 15/60 = 1/4.

Crime reports: 2019=480, 2020=420, 2021=390, 2022=360. Which year showed the largest single-year decrease?

Answer: 2019 to 2020

2019→2020: drop of 60. 2020→2021: drop of 30. 2021→2022: drop of 30. Largest drop = 60 (2019 to 2020).

Two districts have the same total crime (300 each). District X: 40% theft. District Y: 30% theft. How many more theft cases does District X have?

Answer: 30

District X theft = 40% × 300 = 120. District Y theft = 30% × 300 = 90. Difference = 30.

Data: 70% of incidents occur between 10pm–6am. If there are 400 incidents per month, how many occur during the day?

Answer: 120

Night incidents = 70% × 400 = 280. Day incidents = 400 − 280 = 120.

A force has 1,200 officers. 35% are female. How many female officers are there?

Answer: 420

35% of 1,200 = 0.35 × 1,200 = 420 female officers.

A table shows patrol hours: Mon=40, Tue=35, Wed=45, Thu=30, Fri=50. What is the range?

Answer: 20

Range = maximum − minimum = 50 − 30 = 20 hours.