Mettl Data Interpretation Skills 4 — Questions and Answers
Question 1: A trend line in a scatter plot has a negative slope. As variable X increases, variable Y most likely:
- Increases proportionally
- Remains constant
- Decreases (Correct answer)
- Increases then decreases
Correct answer: Decreases
A negative slope means as X increases, Y tends to decrease.
Question 2: A table shows sales rep performance: Rep A closed 18 deals with avg value $5K, Rep B closed 30 deals with avg value $2K. Who generated more total revenue?
- Rep A with $90K (Correct answer)
- Rep B with $60K
- They are equal
- Cannot be determined
Correct answer: Rep A with $90K
Rep A: 18×$5K=$90K; Rep B: 30×$2K=$60K, so Rep A generated more.
Question 3: A line chart shows inventory levels: Week 1=500, Week 2=420, Week 3=340, Week 4=260. If the trend continues, what is the expected Week 5 inventory?
- 160
- 180 (Correct answer)
- 200
- 220
Correct answer: 180
Inventory decreases by 80 each week (500→420→340→260), so Week 5 = 260−80 = 180.
Question 4: A frequency table shows test scores: 50-59=5 students, 60-69=12, 70-79=20, 80-89=10, 90-99=3. What percentage of students scored 70 or above?
- 33%
- 55%
- 66% (Correct answer)
- 76%
Correct answer: 66%
Students scoring 70+ = 20+10+3 = 33 out of 50 total = 66%.
Question 5: Two pie charts show customer satisfaction for 2022 and 2023. 'Very Satisfied' went from 35% to 42% while the total customer base grew from 10,000 to 12,000. How many more 'Very Satisfied' customers were there in 2023 vs 2022?
- 700
- 1,540 (Correct answer)
- 850
- 2,540
Correct answer: 1,540
2022: 35%×10,000=3,500; 2023: 42%×12,000=5,040; difference=1,540.
Question 6: A bar chart shows that a region's GDP grew from $800B to $920B. Which of the following correctly expresses this as a ratio of new to old?
- 1.10:1
- 1.15:1 (Correct answer)
- 1.20:1
- 0.87:1
Correct answer: 1.15:1
920/800 = 1.15, so the ratio of new to old GDP is 1.15:1.
Question 7: A chart shows that Product X has a 15% return rate. If 3,400 units were sold, approximately how many units were NOT returned?
- 2,720
- 2,890 (Correct answer)
- 3,060
- 3,230
Correct answer: 2,890
Units returned = 15% × 3,400 = 510; units not returned = 3,400 − 510 = 2,890.
Mettl Data Interpretation Skills 4
A trend line in a scatter plot has a negative slope.
As variable X increases, variable Y most likely: