CASAS Data Interpretation & Analysis 3 — Questions and Answers
Question 1: A chart shows that a factory produced 120 items on Monday, 95 on Tuesday, and 110 on Wednesday. What was the average daily production?
- 95 items
- 108.3 items (Correct answer)
- 110 items
- 120 items
Correct answer: 108.3 items
(120 + 95 + 110) ÷ 3 = 325 ÷ 3 ≈ 108.3 items per day.
Question 2: A graph shows population growth: 2000=50,000; 2010=65,000; 2020=80,000. By how many people did the population grow from 2000 to 2020?
- 15,000
- 30,000 (Correct answer)
- 65,000
- 25,000
Correct answer: 30,000
80,000 − 50,000 = 30,000 people over the 20-year period.
Question 3: A table lists product prices before and after a 10% discount: original price $80. What is the discounted price?
- $8
- $70
- $72 (Correct answer)
- $75
Correct answer: $72
10% of $80 is $8, so the discounted price is $80 − $8 = $72.
Question 4: A double bar graph compares men and women attending a community class over 3 weeks. Week 1: M=20, W=25; Week 2: M=30, W=28; Week 3: M=22, W=35. In which week did women outnumber men by the most?
- Week 1
- Week 2
- Week 3 (Correct answer)
- All weeks were equal
Correct answer: Week 3
Week 3 shows the largest gap: 35 women vs. 22 men, a difference of 13.
Question 5: A map legend shows that 1 inch = 50 miles. Two cities are 3.5 inches apart on the map. What is the actual distance?
- 150 miles
- 175 miles (Correct answer)
- 200 miles
- 350 miles
Correct answer: 175 miles
3.5 inches × 50 miles per inch = 175 miles.
Question 6: An electricity bill shows usage: January=850 kWh, February=920 kWh, March=780 kWh. Which month had the lowest usage?
- January
- February
- March (Correct answer)
- All were equal
Correct answer: March
March had the lowest usage at 780 kWh.
Question 7: A tally chart shows survey results: 12 people prefer coffee, 8 prefer tea, 5 prefer water, 3 prefer juice. What percentage of respondents prefer coffee?
- 40%
- 43% (Correct answer)
- 50%
- 60%
Correct answer: 43%
Total = 28; 12 ÷ 28 × 100 ≈ 43% prefer coffee.
CASAS Data Interpretation & Analysis 3
A chart shows that a factory produced 120 items on Monday, 95 on Tuesday, and 110 on Wednesday.
What was the average daily production?