Data Interpretation Flashcards
6 cards from real Numerical Reasoning practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Data Interpretation flashcards as text
A table lists monthly rainfall (mm): Jan=45, Feb=30, Mar=55, Apr=80, May=95, Jun=110. What is the percentage increase in rainfall from March to June?
Answer: 100%
Increase = (110−55)/55 × 100 = 55/55 × 100 = 100%.
A bar chart shows staff absences per month: Jan=12, Feb=8, Mar=15, Apr=10, May=7, Jun=14. What is the mode of absences?
Answer: No mode
All values (12, 8, 15, 10, 7, 14) appear exactly once, so there is no mode.
A table shows units produced per shift: Morning=350, Afternoon=420, Night=280. If 15% of morning, 10% of afternoon, and 20% of night units are defective, how many total defective units are there?
Answer: 150
Defective units: Morning=0.15×350=52.5≈53, Afternoon=0.10×420=42, Night=0.20×280=56; total ≈ 151, closest to 150.
A chart shows customer satisfaction scores out of 10 across 4 quarters: Q1=7.2, Q2=7.8, Q3=6.9, Q4=8.1. What is the difference between the highest and lowest quarterly scores?
Answer: 1.2
Highest = 8.1, lowest = 6.9; difference = 8.1 − 6.9 = 1.2.
A table shows sales commissions earned: Rep A=$2,400, B=$1,800, C=$3,100, D=$2,750, E=$1,950. What is the mean commission?
Answer: $2,400
Mean = (2400+1800+3100+2750+1950)/5 = 12000/5 = $2,400.
A line graph shows stock prices over 5 days: Mon=$54, Tue=$58, Wed=$52, Thu=$61, Fri=$57. On which day did the stock price drop the most compared to the previous day?
Answer: Wednesday
Mon→Tue: +$4; Tue→Wed: −$6; Wed→Thu: +$9; Thu→Fri: −$4; the largest drop is Wednesday at −$6.